Update m* tests to use entity & device registry fixtures (#103980)

tests/components/mysensors/test_init.py

@@ -15,6 +15,8 @@ from tests.typing import WebSocketGenerator
 
 async def test_remove_config_entry_device(
     hass: HomeAssistant,
+    device_registry: dr.DeviceRegistry,
+    entity_registry: er.EntityRegistry,
     gps_sensor: Sensor,
     integration: MockConfigEntry,
     gateway: BaseSyncGateway,
@@ -27,11 +29,9 @@ async def test_remove_config_entry_device(
     assert await async_setup_component(hass, "config", {})
     await hass.async_block_till_done()
 
-    device_registry = dr.async_get(hass)
     device_entry = device_registry.async_get_device(
         identifiers={(DOMAIN, f"{config_entry.entry_id}-{node_id}")}
     )
-    entity_registry = er.async_get(hass)
     state = hass.states.get(entity_id)
 
     assert gateway.sensors