Remove a CI exception for Windows

tests/test_qeventloop.py

@@ -555,14 +555,6 @@ def test_regression_bug13(loop, sock_pair):
     c_sock, s_sock = sock_pair
     client_done, server_done = asyncio.Future(), asyncio.Future()
 
-    if os.name == "nt":
-        # On Windows, `loop.add_reader` and `loop.add_writer`
-        # are not supported by Python's `asyncio` due to platform limitations.
-        # Though `qasync` does provide those methods on Windows,
-        # it doesn't guarantee safety against race conditions like on Unix.
-        # https://docs.python.org/3/library/asyncio-platforms.html
-        return
-
     async def server_coro():
         s_reader, s_writer = await asyncio.open_connection(sock=s_sock)