Remove unused imports and other minor cleanups

 - Language imports are preceding other imports
 - Deleted empty file: InlineErasure
 - Removed some unused private[parallel] methods in
   scala/collection/parallel/package.scala

This removes hundreds of warnings when compiling with
"-Xlint -Ywarn-dead-code -Ywarn-unused -Ywarn-unused-import".

13 files changed, 13 insertions, 24 deletions

diff --git a/src/scaladoc/scala/tools/ant/Scaladoc.scala b/src/scaladoc/scala/tools/ant/Scaladoc.scala
index 034416e844..b38aadd328 100644
--- a/src/scaladoc/scala/tools/ant/Scaladoc.scala
+++ b/src/scaladoc/scala/tools/ant/Scaladoc.scala
@@ -6,7 +6,6 @@
 **                          |/                                          **
 \*                                                                      */
 
-
 package scala.tools.ant
 
 import java.io.File
@@ -15,9 +14,8 @@ import org.apache.tools.ant.Project
 import org.apache.tools.ant.types.{Path, Reference}
 import org.apache.tools.ant.util.{FileUtils, GlobPatternMapper}
 
-import scala.tools.nsc.Global
 import scala.tools.nsc.doc.Settings
-import scala.tools.nsc.reporters.{Reporter, ConsoleReporter}
+import scala.tools.nsc.reporters.ConsoleReporter
 
 /** An Ant task to document Scala code.
  *
diff --git a/src/scaladoc/scala/tools/nsc/ScalaDoc.scala b/src/scaladoc/scala/tools/nsc/ScalaDoc.scala
index 32a6ba0ce3..bd00c27f7b 100644
--- a/src/scaladoc/scala/tools/nsc/ScalaDoc.scala
+++ b/src/scaladoc/scala/tools/nsc/ScalaDoc.scala
@@ -6,7 +6,6 @@
 
 package scala.tools.nsc
 
-import java.io.File.pathSeparator
 import scala.tools.nsc.doc.DocFactory
 import scala.tools.nsc.reporters.ConsoleReporter
 import scala.reflect.internal.util.FakePos
diff --git a/src/scaladoc/scala/tools/nsc/doc/ScaladocGlobal.scala b/src/scaladoc/scala/tools/nsc/doc/ScaladocGlobal.scala
index 4b40d25c17..10bfe6f94b 100644
--- a/src/scaladoc/scala/tools/nsc/doc/ScaladocGlobal.scala
+++ b/src/scaladoc/scala/tools/nsc/doc/ScaladocGlobal.scala
@@ -6,11 +6,7 @@
 package scala.tools.nsc
 package doc
 
-import scala.tools.nsc.ast.parser.{ SyntaxAnalyzer, BracePatch }
 import reporters.Reporter
-import typechecker.Analyzer
-import scala.reflect.internal.util.{ BatchSourceFile, RangePosition }
-
 
 trait ScaladocGlobalTrait extends Global {
   outer =>
diff --git a/src/scaladoc/scala/tools/nsc/doc/html/HtmlPage.scala b/src/scaladoc/scala/tools/nsc/doc/html/HtmlPage.scala
index 6cdd99c9ee..c177251dd9 100644
--- a/src/scaladoc/scala/tools/nsc/doc/html/HtmlPage.scala
+++ b/src/scaladoc/scala/tools/nsc/doc/html/HtmlPage.scala
@@ -15,7 +15,7 @@ import model._
 
 import scala.xml.NodeSeq
 import scala.xml.Elem
-import scala.xml.dtd.{DocType, PublicID}
+import scala.xml.dtd.DocType
 import scala.collection._
 import java.io.Writer
 
@@ -245,10 +245,10 @@ abstract class HtmlPage extends Page { thisPage =>
         <img src={ relativeLinkTo(List("permalink.png", "lib")) } alt="Permalink" />
       </a>
     </span>
-	
-  def docEntityKindToCompanionTitle(ety: DocTemplateEntity, baseString: String = "See companion") = 
+
+  def docEntityKindToCompanionTitle(ety: DocTemplateEntity, baseString: String = "See companion") =
     ety.companion match{
-	  case Some(companion) => 
+          case Some(companion) =>
 	    s"$baseString${
 		if(companion.isObject) " object"
 		else if(companion.isTrait) " trait"
diff --git a/src/scaladoc/scala/tools/nsc/doc/html/page/Template.scala b/src/scaladoc/scala/tools/nsc/doc/html/page/Template.scala
index 0353e58e67..e4f5a1e775 100644
--- a/src/scaladoc/scala/tools/nsc/doc/html/page/Template.scala
+++ b/src/scaladoc/scala/tools/nsc/doc/html/page/Template.scala
@@ -15,7 +15,7 @@ import base.comment._
 
 import model._
 import model.diagram._
-import scala.xml.{Elem, NodeSeq, Text, UnprefixedAttribute}
+import scala.xml.{NodeSeq, Text, UnprefixedAttribute}
 import scala.language.postfixOps
 import scala.collection.mutable. { Set, HashSet }
 
diff --git a/src/scaladoc/scala/tools/nsc/doc/html/page/diagram/DiagramGenerator.scala b/src/scaladoc/scala/tools/nsc/doc/html/page/diagram/DiagramGenerator.scala
index cf65de4151..829bba3f32 100644
--- a/src/scaladoc/scala/tools/nsc/doc/html/page/diagram/DiagramGenerator.scala
+++ b/src/scaladoc/scala/tools/nsc/doc/html/page/diagram/DiagramGenerator.scala
@@ -23,5 +23,5 @@ trait DiagramGenerator {
    * @param p   The page the diagram will be embedded in (needed for link generation)
    * @return    The HTML to be embedded in the Scaladoc page
    */
-  def generate(d: Diagram, t: DocTemplateEntity, p: HtmlPage):NodeSeq
+  def generate(d: Diagram, t: DocTemplateEntity, p: HtmlPage): NodeSeq
 }
diff --git a/src/scaladoc/scala/tools/nsc/doc/html/page/diagram/DotDiagramGenerator.scala b/src/scaladoc/scala/tools/nsc/doc/html/page/diagram/DotDiagramGenerator.scala
index 4c0ba32856..41cb812378 100644
--- a/src/scaladoc/scala/tools/nsc/doc/html/page/diagram/DotDiagramGenerator.scala
+++ b/src/scaladoc/scala/tools/nsc/doc/html/page/diagram/DotDiagramGenerator.scala
@@ -10,7 +10,7 @@ package html
 package page
 package diagram
 
-import scala.xml.{NodeSeq, XML, PrefixedAttribute, Elem, MetaData, Null, UnprefixedAttribute}
+import scala.xml.{NodeSeq, PrefixedAttribute, Elem, Null, UnprefixedAttribute}
 import scala.collection.immutable._
 import model._
 import model.diagram._
diff --git a/src/scaladoc/scala/tools/nsc/doc/model/ModelFactory.scala b/src/scaladoc/scala/tools/nsc/doc/model/ModelFactory.scala
index 3432e5e150..bccb65aa5f 100644
--- a/src/scaladoc/scala/tools/nsc/doc/model/ModelFactory.scala
+++ b/src/scaladoc/scala/tools/nsc/doc/model/ModelFactory.scala
@@ -9,11 +9,9 @@ import base.comment._
 import diagram._
 
 import scala.collection._
-import scala.tools.nsc.doc.html.HtmlPage
 import scala.tools.nsc.doc.html.page.diagram.{DotRunner}
 import scala.util.matching.Regex
 import scala.reflect.macros.internal.macroImpl
-import scala.xml.NodeSeq
 import symtab.Flags
 
 import io._
@@ -30,8 +28,8 @@ class ModelFactory(val global: Global, val settings: doc.Settings) {
                with MemberLookup =>
 
   import global._
-  import definitions.{ ObjectClass, NothingClass, AnyClass, AnyValClass, AnyRefClass, ListClass }
-  import rootMirror.{ RootPackage, RootClass, EmptyPackage }
+  import definitions.{ ObjectClass, NothingClass, AnyClass, AnyValClass, AnyRefClass }
+  import rootMirror.{ RootPackage, EmptyPackage }
 
   // Defaults for member grouping, that may be overridden by the template
   val defaultGroup = "Ungrouped"
diff --git a/src/scaladoc/scala/tools/nsc/doc/model/ModelFactoryImplicitSupport.scala b/src/scaladoc/scala/tools/nsc/doc/model/ModelFactoryImplicitSupport.scala
index db39d059d7..0264f2f99f 100644
--- a/src/scaladoc/scala/tools/nsc/doc/model/ModelFactoryImplicitSupport.scala
+++ b/src/scaladoc/scala/tools/nsc/doc/model/ModelFactoryImplicitSupport.scala
@@ -11,7 +11,6 @@ package doc
 package model
 
 import scala.collection._
-import symtab.Flags
 
 /**
  * This trait finds implicit conversions for a class in the default scope and creates scaladoc entries for each of them.
diff --git a/src/scaladoc/scala/tools/nsc/doc/model/ModelFactoryTypeSupport.scala b/src/scaladoc/scala/tools/nsc/doc/model/ModelFactoryTypeSupport.scala
index 45745b5f55..9b04125cc5 100644
--- a/src/scaladoc/scala/tools/nsc/doc/model/ModelFactoryTypeSupport.scala
+++ b/src/scaladoc/scala/tools/nsc/doc/model/ModelFactoryTypeSupport.scala
@@ -20,7 +20,7 @@ trait ModelFactoryTypeSupport {
                with MemberLookup =>
 
   import global._
-  import definitions.{ ObjectClass, NothingClass, AnyClass, AnyValClass, AnyRefClass }
+  import definitions.{ ObjectClass, AnyClass, AnyRefClass }
 
   protected val typeCache = new mutable.LinkedHashMap[Type, TypeEntity]
 
diff --git a/src/scaladoc/scala/tools/nsc/doc/model/TreeFactory.scala b/src/scaladoc/scala/tools/nsc/doc/model/TreeFactory.scala
index c1228e8735..27668a6040 100644
--- a/src/scaladoc/scala/tools/nsc/doc/model/TreeFactory.scala
+++ b/src/scaladoc/scala/tools/nsc/doc/model/TreeFactory.scala
@@ -3,7 +3,7 @@ package doc
 package model
 
 import scala.collection._
-import scala.reflect.internal.util.{RangePosition, OffsetPosition, SourceFile}
+import scala.reflect.internal.util.{RangePosition, SourceFile}
 
 /** The goal of this trait is , using makeTree,
   * to browse a tree to
diff --git a/src/scaladoc/scala/tools/nsc/doc/model/diagram/DiagramDirectiveParser.scala b/src/scaladoc/scala/tools/nsc/doc/model/diagram/DiagramDirectiveParser.scala
index b300752a34..3b7eb4e947 100644
--- a/src/scaladoc/scala/tools/nsc/doc/model/diagram/DiagramDirectiveParser.scala
+++ b/src/scaladoc/scala/tools/nsc/doc/model/diagram/DiagramDirectiveParser.scala
@@ -3,7 +3,7 @@ package model
 package diagram
 
 import model._
-import java.util.regex.{Pattern, Matcher}
+import java.util.regex.Pattern
 import scala.util.matching.Regex
 
 /**
diff --git a/src/scaladoc/scala/tools/partest/ScaladocModelTest.scala b/src/scaladoc/scala/tools/partest/ScaladocModelTest.scala
index fa3e8ff5cb..1ad3b3ff2b 100644
--- a/src/scaladoc/scala/tools/partest/ScaladocModelTest.scala
+++ b/src/scaladoc/scala/tools/partest/ScaladocModelTest.scala
@@ -5,7 +5,6 @@
 
 package scala.tools.partest
 
-import scala.tools.nsc
 import scala.tools.nsc._
 import scala.tools.cmd.CommandLineParser
 import scala.tools.nsc.doc.{ DocFactory, Universe }