PYTHON-4579 Remove TODO and CancelledError

Author: ShaneHarvey

pymongo/asynchronous/monitor.py

@@ -256,8 +256,6 @@ async def _check_server(self) -> ServerDescription:
         start = time.monotonic()
         try:
             return await self._check_once()
-        except asyncio.CancelledError:
-            raise
         except ReferenceError:
             raise
         except Exception as error:

pymongo/asynchronous/topology.py

@@ -503,8 +503,6 @@ async def _process_change(
 
         self._description = new_td
         await self._update_servers()
-        # TODO: Verify that app errors update the $clusterTime.
-        # self._receive_cluster_time_no_lock(server_description.cluster_time)
 
         if self._publish_tp and not suppress_event:
             assert self._events is not None

pymongo/synchronous/monitor.py

@@ -254,8 +254,6 @@ def _check_server(self) -> ServerDescription:
         start = time.monotonic()
         try:
             return self._check_once()
-        except asyncio.CancelledError:
-            raise
         except ReferenceError:
             raise
         except Exception as error:

pymongo/synchronous/topology.py

@@ -503,8 +503,6 @@ def _process_change(
 
         self._description = new_td
         self._update_servers()
-        # TODO: Verify that app errors update the $clusterTime.
-        # self._receive_cluster_time_no_lock(server_description.cluster_time)
 
         if self._publish_tp and not suppress_event:
             assert self._events is not None