[es6] Remove harmony-classes flag

test/mjsunit/harmony/class-property-name-eval-arguments.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-classes --harmony-sloppy
-
-
-(function Method() {
-  class C {
-    eval() {
-      return 1;
-    }
-    arguments() {
-      return 2;
-    }
-    static eval() {
-      return 3;
-    }
-    static arguments() {
-      return 4;
-    }
-  };
-
-  assertEquals(1, new C().eval());
-  assertEquals(2, new C().arguments());
-  assertEquals(3, C.eval());
-  assertEquals(4, C.arguments());
-})();
-
-
-(function Getters() {
-  class C {
-    get eval() {
-      return 1;
-    }
-    get arguments() {
-      return 2;
-    }
-    static get eval() {
-      return 3;
-    }
-    static get arguments() {
-      return 4;
-    }
-  };
-
-  assertEquals(1, new C().eval);
-  assertEquals(2, new C().arguments);
-  assertEquals(3, C.eval);
-  assertEquals(4, C.arguments);
-})();
-
-
-(function Setters() {
-  var x = 0;
-  class C {
-    set eval(v) {
-      x = v;
-    }
-    set arguments(v) {
-      x = v;
-    }
-    static set eval(v) {
-      x = v;
-    }
-    static set arguments(v) {
-      x = v;
-    }
-  };
-
-  new C().eval = 1;
-  assertEquals(1, x);
-  new C().arguments = 2;
-  assertEquals(2, x);
-  C.eval = 3;
-  assertEquals(3, x);
-  C.arguments = 4;
-  assertEquals(4, x);
-})();