New J2K: Split old j2k and new j2k tests

j2k/testData/fileOrElement/list/ForEach.new.kt

@@ -1,15 +0,0 @@
-// ERROR: Unresolved reference: LinkedList
-import java.util.*
-
-class ForEach {
-    fun test() {
-        val xs: ArrayList<Any?> = ArrayList()
-        val ys: MutableList<Any?> = LinkedList<Any>()
-        for (x in xs) {
-            ys.add(x)
-        }
-        for (y in ys) {
-            xs.add(y)
-        }
-    }
-}

j2k/testData/fileOrElement/list/Lists.new.kt

@@ -1,15 +0,0 @@
-// ERROR: Unresolved reference: LinkedList
-import java.util.*
-
-class Lists {
-    fun test() {
-        val xs: MutableList<Any?> = ArrayList()
-        val ys: MutableList<Any?> = LinkedList<Any>()
-        val zs: ArrayList<Any?> = ArrayList()
-        xs.add(null)
-        ys.add(null)
-        xs.clear()
-        ys.clear()
-        zs.add(null)
-    }
-}