remove eventletutil.py - not used anymore

darcs-hash:20090211125645-b2873-5cd501f4ee1cc792aaa449d4ceba6a114b43b8e6
remove green/debug_util.py - not used anymore

darcs-hash:20090211125803-b2873-166ff19240ae404c44ef6aacc82f77c3fa64325e