Remove flags for spread calls and arrays

test/mjsunit/harmony/spread-call-super-property.js

-// Copyright 2015 the V8 project authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Flags: --harmony-spread-calls --harmony-sloppy --harmony-rest-parameters
-
-(function testCallSuperPropertyStrict() {
-  "use strict";
-  class BaseClass {
-    method(...args) { return [this].concat(args); }
-  }
-  class SubClass extends BaseClass {
-    method(...args) { return super.method(...args); }
-  }
-
-  var c = new SubClass();
-  assertEquals([c, 1, 2, 3, 4, 5], c.method(1, 2, 3, 4, 5));
-})();
-
-
-(function testCallSuperPropertySloppy() {
-  class BaseClass {
-    method(...args) { return [this].concat(args); }
-  }
-  class SubClass extends BaseClass {
-    method(...args) { return super.method(...args); }
-  }
-
-  var c = new SubClass();
-  assertEquals([c, 1, 2, 3, 4, 5], c.method(1, 2, 3, 4, 5));
-})();