def remove_member_data_in(self, leaderboard_name, member):
self.redis_connection.hdel(<EOL>self._member_data_key(leaderboard_name),<EOL>member)<EOL>
Remove the optional member data for a given member in the named leaderboard.

@param leaderboard_name [String] Name of the leaderboard.
@param member [String] Member name.