Remove StdLibArraysTest and include collections/ArraysTest.kt into StdLibTestToJSTest smoke tests instead.

Move helper methods, so they are available in JS semantics tests.

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/StdLibArraysTest.java

@@ -1,26 +0,0 @@
-/*
- * Copyright 2010-2015 JetBrains s.r.o.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.jetbrains.kotlin.js.test.semantics;
-
-import junit.framework.Test;
-
-@SuppressWarnings("JUnitTestCaseWithNoTests")
-public final class StdLibArraysTest extends JsUnitTestBase {
-    public static Test suite() throws Exception {
-        return createTestSuiteForFile("libraries/stdlib/test/collections/ArraysTest.kt");
-    }
-}

js/js.tests/test/org/jetbrains/kotlin/js/test/semantics/StdLibTestToJSTest.java

@@ -39,6 +39,7 @@ public class StdLibTestToJSTest extends StdLibQUnitTestSupport {
                           "dom/DomTest.kt",
                           "collections/SequenceTest.kt",
                           "collections/IterableTests.kt",
+                          "collections/ArraysTest.kt",
                           "language/RangeTest.kt",
                           "language/RangeIterationTest.kt"
         );