ci(discovery tests): adapt some more to disabling of ip sweep

tests/test_discovery.py

@@ -189,7 +189,7 @@ async def test_start_is_idempotent_and_stop_cancels(hass, mocker):
     assert track.call_count == 1
 
     async_stop_discovery(hass)
-    unsub_sweep.assert_called_once()
+    # unsub_sweep.assert_called_once()
     unsub_scan.assert_called_once()
     assert DATA_DISCOVERY not in hass.data[DOMAIN]