Remove redundant checks for asyncio.CancelledError

redis/asyncio/connection.py

@@ -491,8 +491,6 @@ async def read_from_socket(
             # data was read from the socket and added to the buffer.
             # return True to indicate that data was read.
             return True
-        except asyncio.CancelledError:
-            raise
         except (socket.timeout, asyncio.TimeoutError):
             if raise_on_timeout:
                 raise TimeoutError("Timeout reading from socket") from None

tests/test_asyncio/test_pubsub.py

@@ -917,7 +917,7 @@ async def loop_step_listen(self):
         except asyncio.TimeoutError:
             return False
 
-            
+
 @pytest.mark.onlynoncluster
 class TestBaseException:
     @pytest.mark.skipif(