Removing unnecessary AnyVal code.

...since it works from source. The parser must be forcibly restrained
from adding a bogus constructor, but other than that it's pretty much
smooth sailing.  To give an idea how smooth, if I change scala.Short like so:

  trait Bippy extends Any
  final class Short extends AnyVal with Bippy

Then it just works, at least until the fiction is revealed.

  scala> def f(x: Bippy) = x
  f: (x: Bippy)Bippy

  scala> f(5)
  <console>:9: error: type mismatch;
   found   : Int(5)
   required: Bippy
                f(5)
                  ^

  scala> f(5: Short)
  java.lang.ClassCastException: java.lang.Short cannot be cast to scala.Bippy
  	at .<init>(<console>:9)
  	at .<clinit>(<console>)
  	at .<init>(<console>:11)

6 files changed, 15 insertions, 43 deletions

diff --git a/test/files/neg/anyval-anyref-parent.check b/test/files/neg/anyval-anyref-parent.check
index b40a0f2710..be895867ff 100644
--- a/test/files/neg/anyval-anyref-parent.check
+++ b/test/files/neg/anyval-anyref-parent.check
@@ -1,4 +1,14 @@
 anyval-anyref-parent.scala:5: error: Any does not have a constructor
 class Bar1 extends Any      // fail
            ^
-one error found
+anyval-anyref-parent.scala:9: error: illegal inheritance; superclass Any
+ is not a subclass of the superclass Object
+ of the mixin trait Immutable
+trait Foo4 extends Any with Immutable // fail
+                            ^
+anyval-anyref-parent.scala:10: error: illegal inheritance; superclass AnyVal
+ is not a subclass of the superclass Object
+ of the mixin trait Immutable
+trait Foo5 extends AnyVal with Immutable   // fail
+                               ^
+three errors found
diff --git a/test/files/neg/anyval-anyref-parent.scala b/test/files/neg/anyval-anyref-parent.scala
index b7bb122ea8..08568487a9 100644
--- a/test/files/neg/anyval-anyref-parent.scala
+++ b/test/files/neg/anyval-anyref-parent.scala
@@ -5,3 +5,7 @@ trait Foo3 extends AnyRef
 class Bar1 extends Any      // fail
 @inline class Bar2 extends AnyVal
 class Bar3 extends AnyRef
+
+trait Foo4 extends Any with Immutable // fail
+trait Foo5 extends AnyVal with Immutable   // fail
+trait Foo6 extends AnyRef with Immutable
diff --git a/test/files/neg/anyval-children-2.check b/test/files/neg/anyval-children-2.check
deleted file mode 100644
index cb327faeeb..0000000000
--- a/test/files/neg/anyval-children-2.check
+++ /dev/null
@@ -1,4 +0,0 @@
-anyval-children-2.scala:1: error: Only @inline classes (not traits) are allowed to extend AnyVal
-@inline trait NotOkDingus1 extends AnyVal // fail
-              ^
-one error found
diff --git a/test/files/neg/anyval-children-2.scala b/test/files/neg/anyval-children-2.scala
deleted file mode 100644
index 4034eb22dd..0000000000
--- a/test/files/neg/anyval-children-2.scala
+++ /dev/null
@@ -1 +0,0 @@
-@inline trait NotOkDingus1 extends AnyVal // fail
diff --git a/test/files/neg/anyval-children.check b/test/files/neg/anyval-children.check
deleted file mode 100644
index 769f990210..0000000000
--- a/test/files/neg/anyval-children.check
+++ /dev/null
@@ -1,23 +0,0 @@
-anyval-children.scala:3: error: class AnyVal needs to be a trait to be mixed in
-@inline class NotOkDingus2 extends Immutable with AnyVal // fail
-                                                  ^
-anyval-children.scala:7: error: Bippy does not have a constructor
-class NotOkBippy1 extends Bippy // fail
-                  ^
-anyval-children.scala:9: error: illegal inheritance; superclass Bippy
- is not a subclass of the superclass Object
- of the mixin trait Immutable
-class NotOkBippy2 extends Bippy with Immutable //fail
-                                     ^
-anyval-children.scala:9: error: Bippy does not have a constructor
-class NotOkBippy2 extends Bippy with Immutable //fail
-                  ^
-anyval-children.scala:11: error: illegal inheritance; superclass Bippy
- is not a subclass of the superclass Object
- of the mixin trait Immutable
-@inline class NotOkBippy3 extends Bippy with Immutable //fail
-                                             ^
-anyval-children.scala:11: error: Bippy does not have a constructor
-@inline class NotOkBippy3 extends Bippy with Immutable //fail
-                          ^
-6 errors found
diff --git a/test/files/neg/anyval-children.scala b/test/files/neg/anyval-children.scala
deleted file mode 100644
index 5a6109f786..0000000000
--- a/test/files/neg/anyval-children.scala
+++ /dev/null
@@ -1,14 +0,0 @@
-class Bippy extends AnyVal // fail
-
-@inline class NotOkDingus2 extends Immutable with AnyVal // fail
-
-@inline object NotOkDingus3 extends AnyVal // fail
-
-class NotOkBippy1 extends Bippy // fail
-
-class NotOkBippy2 extends Bippy with Immutable //fail
-
-@inline class NotOkBippy3 extends Bippy with Immutable //fail
-
-
-@inline class OkBippy extends AnyVal // ok