Revert "Add `state_class = MEASUREMENT` to Derivative sensor (#88408)" (#88952)

homeassistant/components/derivative/sensor.py

@@ -8,11 +8,7 @@ from typing import TYPE_CHECKING
 
 import voluptuous as vol
 
-from homeassistant.components.sensor import (
-    PLATFORM_SCHEMA,
-    SensorEntity,
-    SensorStateClass,
-)
+from homeassistant.components.sensor import PLATFORM_SCHEMA, SensorEntity
 from homeassistant.config_entries import ConfigEntry
 from homeassistant.const import (
     ATTR_UNIT_OF_MEASUREMENT,
@@ -135,7 +131,6 @@ class DerivativeSensor(RestoreEntity, SensorEntity):
 
     _attr_icon = ICON
     _attr_should_poll = False
-    _attr_state_class = SensorStateClass.MEASUREMENT
 
     def __init__(
         self,

tests/components/derivative/test_sensor.py

@@ -4,7 +4,6 @@ from math import sin
 import random
 from unittest.mock import patch
 
-from homeassistant.components.sensor import ATTR_STATE_CLASS, SensorStateClass
 from homeassistant.const import UnitOfPower, UnitOfTime
 from homeassistant.core import HomeAssistant
 from homeassistant.setup import async_setup_component
@@ -79,7 +78,6 @@ async def setup_tests(hass, config, times, values, expected_state):
     assert state is not None
 
     assert round(float(state.state), config["sensor"]["round"]) == expected_state
-    assert state.attributes.get(ATTR_STATE_CLASS) is SensorStateClass.MEASUREMENT
 
     return state