Kotlin: Move tests from test/kotlin to test-kotlin1

Matches test-kotlin2

java/ql/test-kotlin1/library-tests/arrays/arrayIterators.kt

@@ -0,0 +1,13 @@
+fun test(
+    a: Array<Int>,
+    b: IntArray,
+    c: BooleanArray) {
+
+    for (i in a) { }
+    for (i in b) { }
+    for (i in c) { }
+
+    val i1 = a.iterator()
+    val i2 = b.iterator()
+    val i3 = c.iterator()
+}