Apply suggestion from @graingert

Author: graingert

Lib/asyncio/proactor_events.py

@@ -605,13 +605,6 @@ def _loop_reading(self, fut=None):
                 self._loop.call_soon(self._loop_reading)
         except OSError as exc:
             self._protocol.error_received(exc)
-            if not self._closing and not self._conn_lost:
-                # Some errors are transient and recoverable, e.g. a
-                # ConnectionResetError raised synchronously by WSARecvFrom()
-                # from a stale ICMP port-unreachable notification on a UDP
-                # socket. Re-arm the read loop instead of leaving it dead
-                # (gh-127057).
-                self._loop.call_soon(self._loop_reading)
         except exceptions.CancelledError:
             if not self._closing:
                 raise