removed some warnings and reduntant code

testlib/src/Test.kt

@@ -44,7 +44,7 @@ fun fails(block: fun() : Any) {
 }
 
 fun todo(block: fun(): Any) {
-  println("TODO at " + Exception().getStackTrace()?.get(1))
+  println("TODO at " + Exception().getStackTrace()?.get(1) + " for " + block)
 }
 
 /*

testlib/test/CollectionTest.kt

@@ -104,7 +104,7 @@ class CollectionTest() : TestSupport() {
 
   fun testForeach() {
     var count = 0
-    val x = data.foreach{ count += it.length }
+    data.foreach{ count += it.length }
     assertEquals(6, count)
   }