diff --git a/homeassistant/components/threshold/__init__.py b/homeassistant/components/threshold/__init__.py
index bb57170904f..161acd0aa5b 100644
--- a/homeassistant/components/threshold/__init__.py
+++ b/homeassistant/components/threshold/__init__.py
@@ -5,10 +5,7 @@ import logging
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import CONF_ENTITY_ID, Platform
 from homeassistant.core import HomeAssistant
-from homeassistant.helpers.device import (
-    async_entity_id_to_device_id,
-    async_remove_stale_devices_links_keep_entity_device,
-)
+from homeassistant.helpers.device import async_entity_id_to_device_id
 from homeassistant.helpers.helper_integration import (
     async_handle_source_entity_changes,
     async_remove_helper_config_entry_from_source_device,
@@ -20,13 +17,6 @@ _LOGGER = logging.getLogger(__name__)
 async def async_setup_entry(hass: HomeAssistant, entry: ConfigEntry) -> bool:
     """Set up Min/Max from a config entry."""
 
-    # This can be removed in HA Core 2026.2
-    async_remove_stale_devices_links_keep_entity_device(
-        hass,
-        entry.entry_id,
-        entry.options[CONF_ENTITY_ID],
-    )
-
     def set_source_entity_id_or_uuid(source_entity_id: str) -> None:
         hass.config_entries.async_update_entry(
             entry,
diff --git a/tests/components/threshold/test_init.py b/tests/components/threshold/test_init.py
index 0fc480db37a..0f92a0c0e68 100644
--- a/tests/components/threshold/test_init.py
+++ b/tests/components/threshold/test_init.py
@@ -212,92 +212,6 @@ async def test_entry_changed(hass: HomeAssistant, platform) -> None:
     assert threshold_entity_entry.device_id == run2_entry.device_id
 
 
-async def test_device_cleaning(
-    hass: HomeAssistant,
-    device_registry: dr.DeviceRegistry,
-    entity_registry: er.EntityRegistry,
-) -> None:
-    """Test for source entity device for Threshold."""
-
-    # Source entity device config entry
-    source_config_entry = MockConfigEntry()
-    source_config_entry.add_to_hass(hass)
-
-    # Device entry of the source entity
-    source_device1_entry = device_registry.async_get_or_create(
-        config_entry_id=source_config_entry.entry_id,
-        identifiers={("sensor", "identifier_test1")},
-        connections={("mac", "30:31:32:33:34:01")},
-    )
-
-    # Source entity registry
-    source_entity = entity_registry.async_get_or_create(
-        "sensor",
-        "test",
-        "source",
-        config_entry=source_config_entry,
-        device_id=source_device1_entry.id,
-    )
-    await hass.async_block_till_done()
-    assert entity_registry.async_get("sensor.test_source") is not None
-
-    # Configure the configuration entry for Threshold
-    threshold_config_entry = MockConfigEntry(
-        data={},
-        domain=DOMAIN,
-        options={
-            "entity_id": "sensor.test_source",
-            "hysteresis": 0.0,
-            "lower": -2.0,
-            "name": "Threshold",
-            "upper": None,
-        },
-        title="Threshold",
-    )
-    threshold_config_entry.add_to_hass(hass)
-    assert await hass.config_entries.async_setup(threshold_config_entry.entry_id)
-    await hass.async_block_till_done()
-
-    # Confirm the link between the source entity device and the threshold sensor
-    threshold_entity = entity_registry.async_get("binary_sensor.threshold")
-    assert threshold_entity is not None
-    assert threshold_entity.device_id == source_entity.device_id
-
-    # Device entry incorrectly linked to Threshold config entry
-    device_registry.async_get_or_create(
-        config_entry_id=threshold_config_entry.entry_id,
-        identifiers={("sensor", "identifier_test2")},
-        connections={("mac", "30:31:32:33:34:02")},
-    )
-    device_registry.async_get_or_create(
-        config_entry_id=threshold_config_entry.entry_id,
-        identifiers={("sensor", "identifier_test3")},
-        connections={("mac", "30:31:32:33:34:03")},
-    )
-    await hass.async_block_till_done()
-
-    # Before reloading the config entry, two devices are expected to be linked
-    devices_before_reload = device_registry.devices.get_devices_for_config_entry_id(
-        threshold_config_entry.entry_id
-    )
-    assert len(devices_before_reload) == 2
-
-    # Config entry reload
-    await hass.config_entries.async_reload(threshold_config_entry.entry_id)
-    await hass.async_block_till_done()
-
-    # Confirm the link between the source entity device and the threshold sensor after reload
-    threshold_entity = entity_registry.async_get("binary_sensor.threshold")
-    assert threshold_entity is not None
-    assert threshold_entity.device_id == source_entity.device_id
-
-    # After reloading the config entry, only one linked device is expected
-    devices_after_reload = device_registry.devices.get_devices_for_config_entry_id(
-        threshold_config_entry.entry_id
-    )
-    assert len(devices_after_reload) == 0
-
-
 async def test_async_handle_source_entity_changes_source_entity_removed(
     hass: HomeAssistant,
     device_registry: dr.DeviceRegistry,