fix: remove superfluous special handling of asyncio.CancelledError

strawberry/subscriptions/protocols/graphql_transport_ws/handlers.py

@@ -108,10 +108,6 @@ async def handle_connection_init_timeout(self) -> None:
             self.connection_timed_out = True
             reason = "Connection initialisation timeout"
             await self.close(code=4408, reason=reason)
-        except asyncio.CancelledError:
-            # asyncio.CancelledError should not be handled in handle_task_exception
-            # In some python versions asyncio.CancelledError inherits from Exception
-            raise
         except Exception as error:
             await self.handle_task_exception(error)  # pragma: no cover
         finally:
@@ -313,11 +309,6 @@ async def handle_async_results(
                         ]
                     next_message = NextMessage(id=operation.id, payload=next_payload)
                     await operation.send_message(next_message)
-        except asyncio.CancelledError:
-            # CancelledErrors are expected during task cleanup and
-            #   should not be handled in process_error.
-            # In some python versions asyncio.CancelledError inherits from Exception.
-            raise
         except Exception as error:
             # GraphQLErrors are handled by graphql-core and included in the
             # ExecutionResult