[es6] remove --harmony-templates flag

test/mjsunit/es6/templates.js

 // Copyright 2014 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-templates --harmony-unicode
+// Flags: --harmony-unicode
 
 var num = 5;
 var str = "str";
 function fn() { return "result"; }
 var obj = {
   num: num,
   str: str,
   fn: function() { return "result"; }
 };
 
@@ skipping 563 matching lines @@
     raw.push("raw;" + text);
     return text;
   }
   assertEquals("test3", tag`test1``test2``test3`);
   assertEquals([
     "tag;test1",
     "tag;test2",
     "raw;test3"
   ], raw);
 })();