removed extra timestamp param for example lookup_nonce... not sure why this was there in the first place

git-svn-id: https://oauth.googlecode.com/svn/code/python@963 f7ae4463-c52f-0410-a7dc-93bad6e629e8

Author: leah.culver

oauth/oauth.py

@@ -477,7 +477,7 @@ def lookup_token(self, oauth_consumer, token_type, token_token):
         """-> OAuthToken."""
         raise NotImplementedError
 
-    def lookup_nonce(self, oauth_consumer, oauth_token, nonce, timestamp):
+    def lookup_nonce(self, oauth_consumer, oauth_token, nonce):
         """-> OAuthToken."""
         raise NotImplementedError