Remove runtime flags for sloppy mode block scoping features

test/mjsunit/regress/regress-542100.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-sloppy --harmony-sloppy-function
 // Flags: --no-harmony-restrictive-declarations
 
 (function() {
   var x = {a: 1}
   assertEquals("undefined", typeof f);
   with (x)
     function f() { return a; }
   assertEquals("function", typeof f);
   assertEquals(1, f());
   x.a = 2;
   assertEquals(2, f());
 })();
 
 var y = {b: 1}
 assertEquals("undefined", typeof g);
 with (y)
   function g() { return b; }
 assertEquals("function", typeof g);
 assertEquals(1, g());
 y.b = 2;
 assertEquals(2, g());