diff --git a/homeassistant/components/homewizard/sensor.py b/homeassistant/components/homewizard/sensor.py
index c5cf0bc64c7..9bb61a467cb 100644
--- a/homeassistant/components/homewizard/sensor.py
+++ b/homeassistant/components/homewizard/sensor.py
@@ -625,26 +625,8 @@ async def async_setup_entry(
 ) -> None:
     """Initialize sensors."""
 
-    # Migrate original gas meter sensor to ExternalDevice
-    # This is sensor that was directly linked to the P1 Meter
-    # Migration can be removed after 2024.8.0
     ent_reg = er.async_get(hass)
     data = entry.runtime_data.data.data
-    if (
-        entity_id := ent_reg.async_get_entity_id(
-            Platform.SENSOR, DOMAIN, f"{entry.unique_id}_total_gas_m3"
-        )
-    ) and data.gas_unique_id is not None:
-        ent_reg.async_update_entity(
-            entity_id,
-            new_unique_id=f"{DOMAIN}_gas_meter_{data.gas_unique_id}",
-        )
-
-    # Remove old gas_unique_id sensor
-    if entity_id := ent_reg.async_get_entity_id(
-        Platform.SENSOR, DOMAIN, f"{entry.unique_id}_gas_unique_id"
-    ):
-        ent_reg.async_remove(entity_id)
 
     # Initialize default sensors
     entities: list = [
diff --git a/tests/components/homewizard/snapshots/test_sensor.ambr b/tests/components/homewizard/snapshots/test_sensor.ambr
index dd50b098d40..5d5b458dccc 100644
--- a/tests/components/homewizard/snapshots/test_sensor.ambr
+++ b/tests/components/homewizard/snapshots/test_sensor.ambr
@@ -1,37 +1,4 @@
 # serializer version: 1
-# name: test_gas_meter_migrated[sensor.homewizard_aabbccddeeff_total_gas_m3:entity-registry]
-  EntityRegistryEntrySnapshot({
-    'aliases': set({
-    }),
-    'area_id': None,
-    'capabilities': None,
-    'config_entry_id': <ANY>,
-    'device_class': None,
-    'device_id': <ANY>,
-    'disabled_by': None,
-    'domain': 'sensor',
-    'entity_category': None,
-    'entity_id': 'sensor.homewizard_aabbccddeeff_total_gas_m3',
-    'has_entity_name': False,
-    'hidden_by': None,
-    'icon': None,
-    'id': <ANY>,
-    'labels': set({
-    }),
-    'name': None,
-    'options': dict({
-    }),
-    'original_device_class': None,
-    'original_icon': None,
-    'original_name': None,
-    'platform': 'homewizard',
-    'previous_unique_id': 'aabbccddeeff_total_gas_m3',
-    'supported_features': 0,
-    'translation_key': None,
-    'unique_id': 'homewizard_gas_meter_01FFEEDDCCBBAA99887766554433221100',
-    'unit_of_measurement': None,
-  })
-# ---
 # name: test_sensors[HWE-KWH1-entity_ids7][sensor.device_apparent_power:device-registry]
   DeviceRegistryEntrySnapshot({
     'area_id': None,
diff --git a/tests/components/homewizard/test_sensor.py b/tests/components/homewizard/test_sensor.py
index abcd6a879c5..c180c2a4def 100644
--- a/tests/components/homewizard/test_sensor.py
+++ b/tests/components/homewizard/test_sensor.py
@@ -7,14 +7,13 @@ from homewizard_energy.models import Data
 import pytest
 from syrupy.assertion import SnapshotAssertion
 
-from homeassistant.components.homewizard import DOMAIN
 from homeassistant.components.homewizard.const import UPDATE_INTERVAL
-from homeassistant.const import STATE_UNAVAILABLE, Platform
+from homeassistant.const import STATE_UNAVAILABLE
 from homeassistant.core import HomeAssistant
 from homeassistant.helpers import device_registry as dr, entity_registry as er
 import homeassistant.util.dt as dt_util
 
-from tests.common import MockConfigEntry, async_fire_time_changed
+from tests.common import async_fire_time_changed
 
 pytestmark = [
     pytest.mark.usefixtures("init_integration"),
@@ -815,49 +814,3 @@ async def test_entities_not_created_for_device(
     """Ensures entities for a specific device are not created."""
     for entity_id in entity_ids:
         assert not hass.states.get(entity_id)
-
-
-async def test_gas_meter_migrated(
-    hass: HomeAssistant,
-    entity_registry: er.EntityRegistry,
-    init_integration: MockConfigEntry,
-    snapshot: SnapshotAssertion,
-) -> None:
-    """Test old gas meter sensor is migrated."""
-    entity_registry.async_get_or_create(
-        Platform.SENSOR,
-        DOMAIN,
-        "aabbccddeeff_total_gas_m3",
-    )
-
-    await hass.config_entries.async_reload(init_integration.entry_id)
-    await hass.async_block_till_done()
-
-    entity_id = "sensor.homewizard_aabbccddeeff_total_gas_m3"
-
-    assert (entity_entry := entity_registry.async_get(entity_id))
-    assert snapshot(name=f"{entity_id}:entity-registry") == entity_entry
-
-    # Make really sure this happens
-    assert entity_entry.previous_unique_id == "aabbccddeeff_total_gas_m3"
-
-
-async def test_gas_unique_id_removed(
-    hass: HomeAssistant,
-    entity_registry: er.EntityRegistry,
-    init_integration: MockConfigEntry,
-    snapshot: SnapshotAssertion,
-) -> None:
-    """Test old gas meter id sensor is removed."""
-    entity_registry.async_get_or_create(
-        Platform.SENSOR,
-        DOMAIN,
-        "aabbccddeeff_gas_unique_id",
-    )
-
-    await hass.config_entries.async_reload(init_integration.entry_id)
-    await hass.async_block_till_done()
-
-    entity_id = "sensor.homewizard_aabbccddeeff_gas_unique_id"
-
-    assert not entity_registry.async_get(entity_id)