Revert of ES6 computed property names

src/preparser.cc

Index: src/preparser.cc
diff --git a/src/preparser.cc b/src/preparser.cc
index 51cac17cfadf99fd497e72dff48653f561f49a4c..1bd33409f002d3d1711c14557fdbdf9ed2b11c98 100644
--- a/src/preparser.cc
+++ b/src/preparser.cc
@@ -990,10 +990,8 @@
     if (Check(Token::SEMICOLON)) continue;
     const bool in_class = true;
     const bool is_static = false;
-    bool is_computed_name = false;  // Classes do not care about computed
-                                    // property names here.
-    ParsePropertyDefinition(NULL, in_class, is_static, &is_computed_name,
-                            &has_seen_constructor, CHECK_OK);
+    ParsePropertyDefinition(NULL, in_class, is_static, &has_seen_constructor,
+                            CHECK_OK);
   }
 
   Expect(Token::RBRACE, CHECK_OK);