Remove unused imports

Author: dacort

src/pyssm_client/cli/coordinator.py

@@ -7,7 +7,7 @@
 import sys
 import termios
 import tty
-from typing import Any, Callable, Optional
+from typing import Any
 
 from ..communicator.data_channel import SessionDataChannel
 from ..communicator.utils import create_websocket_config
@@ -474,4 +474,3 @@ async def _stop_resize_heartbeat(self) -> None:
             except asyncio.CancelledError:
                 pass
         self._resize_task = None
-