Fix duplicate config entry additions in tests (#107984)

zha and plex still add the same config entry multiple times
but they are going to need seperate PRs as they have more
complex logic

tests/components/anova/test_init.py

@@ -26,7 +26,6 @@ async def test_wrong_login(
 ) -> None:
     """Test for setup failure if connection to Anova is missing."""
     entry = create_entry(hass)
-    entry.add_to_hass(hass)
     await hass.config_entries.async_setup(entry.entry_id)
     assert entry.state is ConfigEntryState.SETUP_ERROR