[3.7] bpo-24334: Remove inaccurate match_hostname call (GH-6211) (#6212)

Commit 141c5e8c re-added match_hostname() call. The resurrection of the
function call was never intended and was solely a merge mistake.
Signed-off-by: Christian Heimes <christian@python.org>
(cherry picked from commit e42ae915)
Co-authored-by: Christian Heimes <christian@python.org>

Lib/ssl.py

@@ -1106,11 +1106,6 @@ class SSLSocket(socket):
             if timeout == 0.0 and block:
                 self.settimeout(None)
             self._sslobj.do_handshake()
-            if self.context.check_hostname:
-                if not self.server_hostname:
-                    raise ValueError("check_hostname needs server_hostname "
-                                     "argument")
-                match_hostname(self.getpeercert(), self.server_hostname)
         finally:
             self.settimeout(timeout)