run ScalaCheck tests directly, not through partest

ScalaCheck ever being under partest in the first place is ancient
history, from back in the Ant build days (shudder)

ScalaCheck support was removed from partest 1.1.0, which we already
upgraded to in a recent commit

also upgrades ScalaCheck from 1.11.6 to 1.13.4, since we might
as well.  no source changes were necessary.

1 files changed, 0 insertions, 68 deletions

diff --git a/test/files/scalacheck/t4147.scala b/test/files/scalacheck/t4147.scala
deleted file mode 100644
index 72f6e9afd5..0000000000
--- a/test/files/scalacheck/t4147.scala
+++ /dev/null
@@ -1,68 +0,0 @@
-import org.scalacheck.Prop.{forAll, throws}
-import org.scalacheck.Properties
-import org.scalacheck.Gen
-
-
-import collection.mutable
-
-
-object Test extends Properties("Mutable TreeSet") {
-
-  val generator = Gen.listOfN(1000, Gen.chooseNum(0, 1000))
-
-  val denseGenerator = Gen.listOfN(1000, Gen.chooseNum(0, 200))
-
-  property("Insertion doesn't allow duplicates values.") = forAll(generator) { (s: List[Int]) =>
-    {
-      val t = mutable.TreeSet[Int](s: _*)
-      t == s.toSet
-    }
-  }
-
-  property("Verification of size method validity") = forAll(generator) { (s: List[Int]) =>
-    {
-      val t = mutable.TreeSet[Int](s: _*)
-      for (a <- s) {
-        t -= a
-      }
-      t.size == 0
-    }
-  }
-
-  property("All inserted elements are removed") = forAll(generator) { (s: List[Int]) =>
-    {
-      val t = mutable.TreeSet[Int](s: _*)
-      for (a <- s) {
-        t -= a
-      }
-      t == Set()
-    }
-  }
-
-  property("Elements are sorted.") = forAll(generator) { (s: List[Int]) =>
-    {
-      val t = mutable.TreeSet[Int](s: _*)
-      t.toList == s.distinct.sorted
-    }
-  }
-
-  property("Implicit CanBuildFrom resolution succeeds as well as the \"same-result-type\" principle.") =
-    forAll(generator) { (s: List[Int]) =>
-      {
-        val t = mutable.TreeSet[Int](s: _*)
-        val t2 = t.map(_ * 2)
-        t2.isInstanceOf[collection.mutable.TreeSet[Int]]
-      }
-    }
-
-  property("A view doesn't expose off bounds elements") = forAll(denseGenerator) { (s: List[Int]) =>
-    {
-      val t = mutable.TreeSet[Int](s: _*)
-      val view = t.rangeImpl(Some(50), Some(150))
-      view.filter(_ < 50) == Set[Int]() && view.filter(_ >= 150) == Set[Int]()
-    }
-  }
-
-  property("ordering must not be null") =
-    throws(classOf[NullPointerException])(mutable.TreeSet.empty[Int](null))
-}