Add trio_net to setup.py and removed deprecated module (#90)

Author: mehaase

rethinkdb/trio_net/net_trio.py

@@ -23,7 +23,6 @@
 
 import trio
 import trio.abc
-import trio.ssl
 
 from rethinkdb import ql2_pb2, RethinkDB
 from rethinkdb.errors import ReqlAuthError, ReqlCursorEmpty, ReqlDriverError, \

setup.py

@@ -76,6 +76,7 @@
         'rethinkdb.tornado_net',
         'rethinkdb.twisted_net',
         'rethinkdb.gevent_net',
+        'rethinkdb.trio_net',
         'rethinkdb.backports',
         'rethinkdb.backports.ssl_match_hostname'
     ] + CONDITIONAL_PACKAGES,