Merge boxWithJava testData into box, delete BoxWithJava test

compiler/testData/codegen/box/jvmStatic/enumCompanion.kt

@@ -0,0 +1,43 @@
+// WITH_RUNTIME
+// FILE: Test.java
+
+class Test {
+    public static String foo() {
+        return A.foo;
+    }
+
+    public static String constBar() {
+        return A.constBar;
+    }
+
+    public static String getBar() {
+        return A.getBar();
+    }
+
+    public static String baz() {
+        return A.baz();
+    }
+}
+
+// FILE: enumCompanionObject.kt
+
+enum class A {
+    ;
+    companion object {
+        @JvmField val foo: String = "OK"
+
+        const val constBar: String = "OK"
+
+        @JvmStatic val bar: String = "OK"
+
+        @JvmStatic fun baz() = foo
+    }
+}
+
+fun box(): String {
+    if (Test.foo() != "OK") return "Fail foo"
+    if (Test.constBar() != "OK") return "Fail bar"
+    if (Test.getBar() != "OK") return "Fail getBar"
+    if (Test.baz() != "OK") return "Fail baz"
+    return "OK"
+}