Fix NameError inside HTTPClient.edit_member.

discord/http.py

@@ -463,7 +463,7 @@ class HTTPClient:
 
     def edit_member(self, guild_id, user_id, **fields):
         r = Route('PATCH', '/guilds/{guild_id}/members/{user_id}', guild_id=guild_id, user_id=user_id)
-        return self.request(r, json=fields, bucket=bucket)
+        return self.request(r, json=fields)
 
     # Channel management