New J2K: Split old j2k and new j2k tests

j2k/testData/fileOrElement/projections/projections.new.kt

@@ -1,19 +0,0 @@
-internal class C<T> {
-    fun foo1(src: Collection<T>) {
-        val t = src.iterator().next()
-    }
-
-    fun foo2(src: ArrayList<out T>) {
-        val t = src.iterator().next()
-    }
-
-    fun foo3(dst: MutableCollection<in T>, t: T) {
-        dst.add(t)
-    }
-
-    fun foo4(comparable: Comparable<T>, t: T): Int {
-        return comparable.compareTo(t)
-    }
-
-    fun foo5(w: Collection<*>?) {}
-}