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

Matches test-kotlin2

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

@@ -0,0 +1,10 @@
+import java
+
+query predicate iterator(MethodCall ma, string mn, string t) {
+  exists(Method m |
+    ma.getMethod() = m and
+    m.getName() = "iterator" and
+    mn = m.getSignature() and
+    t = ma.getMethod().getDeclaringType().getQualifiedName()
+  )
+}