Custom sensor delete history

Hello,
I created the custom sensor from W to kWh and have add this sensor to recorder, I tried to delete history via “Recorder: Purge entities” but doesn’t work.
where am I wrong?

sensor:
  - platform: integration
    source: sensor.led_power
    name: "led_kWh"
    unit_prefix: k
    round: 2
    method: left

customize:
  sensor.led_kWh:
    friendly_name: "Led kWh"
    icon: mdi:counter
    last_reset: '1970-01-01T00:00:00+00:00'
    device_class: energy
    state_class: total_increasing
    unit_of_measurement: kWh