Remove destructuring and default arguments runtime flags

test/webkit/class-syntax-declaration.js

 // Copyright 2015 the V8 project authors. All rights reserved.
 // Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions
 // are met:
 // 1.  Redistributions of source code must retain the above copyright
 //     notice, this list of conditions and the following disclaimer.
 // 2.  Redistributions in binary form must reproduce the above copyright
 //     notice, this list of conditions and the following disclaimer in the
 //     documentation and/or other materials provided with the distribution.
 //
 // THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
 // EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 // WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 // DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
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 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 // LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 // ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 
-// Flags: --harmony-sloppy --harmony-destructuring-bind
+// Flags: --harmony-sloppy
 
 description('Tests for ES6 class syntax declarations');
 
 var constructorCallCount = 0;
 const staticMethodValue = [1];
 const instanceMethodValue = [2];
 const getterValue = [3];
 var setterValue = undefined;
 class A {
     constructor() { constructorCallCount++; }
@@ skipping 39 matching lines @@
 
 shouldNotThrow("class X { constructor() {} set foo(a) {} }");
 shouldNotThrow("class X { constructor() {} set foo({x, y}) {} }");
 shouldThrow("class X { constructor() {} set foo() {} }");
 shouldThrow("class X { constructor() {} set foo(a, b) {} }");
 shouldNotThrow("class X { constructor() {} get foo() {} }");
 shouldThrow("class X { constructor() {} get foo(x) {} }");
 shouldThrow("class X { constructor() {} get foo({x, y}) {} }");
 
 var successfullyParsed = true;