Stop using direct socket connection to test ssh connection - breaks w…

…hen using a bastion

lib/ansible/plugins/connection/ssh.py

@@ -139,13 +139,6 @@ def __init__(self, *args, **kwargs):
     def _connect(self):
         return self
 
-    def transport_test(self, connect_timeout):
-        ''' Test the transport mechanism, if available '''
-        port = int(self.port or 22)
-        display.vvv("attempting transport test to %s:%s" % (self.host, port))
-        sock = socket.create_connection((self.host, port), connect_timeout)
-        sock.close()
-
     @staticmethod
     def _create_control_path(host, port, user):
         '''Make a hash for the controlpath based on con attributes'''