Remove unused variable to please GCC 4.6.

Review URL: http://codereview.chromium.org/6777024

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@7451 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/api.cc

@@ -4175,8 +4175,10 @@ void v8::Date::DateTimeConfigurationChangeNotification() {
 
     // Call ResetDateCache(0 but expect no exceptions:
     bool caught_exception = false;
-    i::Handle<i::Object> result =
-        i::Execution::TryCall(func, isolate->js_builtins_object(), 0, NULL,
+    i::Execution::TryCall(func,
+                          isolate->js_builtins_object(),
+                          0,
+                          NULL,
                           &caught_exception);
   }
 }