Remove always-true --harmony-restrictive-declarations flag

test/mjsunit/harmony/sloppy-restrictive-block-function.js

-// Copyright 2016 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-restrictive-declarations
-
-// ES#sec-functiondeclarations-in-ifstatement-statement-clauses
-// Annex B 3.4 FunctionDeclarations in IfStatement Statement Clauses
-// In sloppy mode, function declarations in if statements act like
-// they have a block around them. Prohibited in strict mode.
-(function() {
-  if (false) function f() { };
-  assertEquals(undefined, f);
-})();
-
-(function() {
-  assertEquals(undefined, f);
-  if (true) function f() { };
-  assertEquals('function', typeof f);
-})();
-
-(function() {
-  assertEquals(undefined, f);
-  if (true) {} else function f() { };
-  assertEquals(undefined, f);
-})();
-
-(function() {
-  assertEquals(undefined, f);
-  if (false) {} else function f() { };
-  assertEquals('function', typeof f);
-})();
-
-// Labeled function declarations undergo the same hoisting/FiB semantics as if
-// they were unalbeled.
-(function() {
-  function bar() {
-    return f;
-    x: function f() {}
-  }
-  assertEquals('function', typeof bar());
-})();
-
-(function() {
-  function bar() {
-    return f;
-    {
-      x: function f() {}
-    }
-  }
-  assertEquals(undefined, bar());
-})();