Drop deprecated FunctionalList, FunctionalQueue.

Remove dependency on FunctionalList from tests.

libraries/stdlib/test/concurrent/FListTest.kt

@@ -1,16 +0,0 @@
-package test.concurrent
-
-import kotlin.concurrent.*
-import junit.framework.*
-
-class FListTest() : TestCase() {
-    fun testEmpty() {
-        val empty = FunctionalQueue<Int> ()
-        Assert.assertTrue(empty.empty)
-    }
-
-    fun testNonEmpty() {
-//        val empty = FunctionalList.emptyList<Int> ()
-//        assertTrue(!(empty + 10).empty)
-    }
-}