no atexit, OS will suffice

Author: Arusekk

pwnlib/tubes/ssh.py

@@ -777,7 +777,6 @@ def __init__(self, user=None, host=None, port=22, password=None, key=None,
 
             self.fingerprint = self.transport.get_remote_server_key().get_fingerprint().hex()
 
-            atexit.register(self.close)
             h.success()
 
         if self.raw: