Revert "Use atomic move function on known host file in paramiko to prevent rare…

Revert "Use atomic move function on known host file in paramiko to prevent rare occurance of Control-C"

This reverts commit 642b183f.

lib/ansible/runner/connection_plugins/paramiko_ssh.py

@@ -381,13 +381,7 @@ class Connection(object):
 
                 self.ssh.load_system_host_keys()
                 self.ssh._host_keys.update(self.ssh._system_host_keys)
-
-                # save the new keys to a temporary file and move it into place
-                # rather than rewriting the file
-                tmp_keyfile = tempfile.NamedTemporaryFile()
-                self._save_ssh_host_keys(tmp_keyfile)
-                atomic_move(tmp_keyfile.name, self.keyfile)
-                tmp_keyfile.close()
+                self._save_ssh_host_keys(self.keyfile)
 
             except: