green select: Make sure devpoll method is removed

devpoll is another polling method, added in Python 3.3. We don't have
a green version of it so we better remove it too (see [1] for more
details).

[1] f63165c0e3

eventlet/green/select.py

@@ -6,7 +6,7 @@ from eventlet.support import six
 
 
 __patched__ = ['select']
-__deleted__ = ['poll', 'epoll', 'kqueue', 'kevent']
+__deleted__ = ['devpoll', 'poll', 'epoll', 'kqueue', 'kevent']
 
 
 def get_fileno(obj):

tests/isolated/patcher_blocking_select_methods_are_deleted.py

@@ -9,7 +9,7 @@ if __name__ == '__main__':
     # * https://bitbucket.org/eventlet/eventlet/issues/167
     # * https://github.com/eventlet/eventlet/issues/169
     import select
-    for name in ['poll', 'epoll', 'kqueue', 'kevent']:
+    for name in ['devpoll', 'poll', 'epoll', 'kqueue', 'kevent']:
         assert not hasattr(select, name), name
 
     import sys