gh-150486: Remove dead `_buffer_factory` attribute from `_SelectorDatagramTransport...

diff --git a/Lib/asyncio/selector_events.py b/Lib/asyncio/selector_events.py
index 961dbfb4b96303e0269c1b8309f025a4af9d32ef..adfbc093a0d16d6e671ded54799270aa6257b2b3 100644 (file)
--- a/Lib/asyncio/selector_events.py
+++ b/Lib/asyncio/selector_events.py
@@ -1233,7 +1233,6 @@ class _SelectorSocketTransport(_SelectorTransport):
 
 class _SelectorDatagramTransport(_SelectorTransport, transports.DatagramTransport):
 
-    _buffer_factory = collections.deque
     _header_size = 8
 
     def __init__(self, loop, sock, protocol, address=None,