Remove unused typedef.

Review URL: http://codereview.chromium.org/3164022

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@5302 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

include/v8.h

@@ -1763,8 +1763,6 @@ class V8EXPORT AccessorInfo {
 
 typedef Handle<Value> (*InvocationCallback)(const Arguments& args);
 
-typedef int (*LookupCallback)(Local<Object> self, Local<String> name);
-
 /**
  * NamedProperty[Getter|Setter] are used as interceptors on object.
  * See ObjectTemplate::SetNamedPropertyHandler.