Remove unnecessary DOMAIN alias in tests (l-r) (#146009)

* Remove unnecessary DOMAIN alias in tests (l-r)

* Keep late import in lirc

tests/components/lirc/test_init.py

@@ -14,18 +14,18 @@ async def test_repair_issue_is_created(
 ) -> None:
     """Test repair issue is created."""
     from homeassistant.components.lirc import (  # pylint: disable=import-outside-toplevel
-        DOMAIN as LIRC_DOMAIN,
+        DOMAIN,
     )
 
     assert await async_setup_component(
         hass,
-        LIRC_DOMAIN,
+        DOMAIN,
         {
-            LIRC_DOMAIN: {},
+            DOMAIN: {},
         },
     )
     await hass.async_block_till_done()
     assert (
         HOMEASSISTANT_DOMAIN,
-        f"deprecated_system_packages_yaml_integration_{LIRC_DOMAIN}",
+        f"deprecated_system_packages_yaml_integration_{DOMAIN}",
     ) in issue_registry.issues