Add class as first positional arg to sensor_schema (#3216)

esphome/components/duty_cycle/sensor.py

@@ -3,7 +3,6 @@ import esphome.config_validation as cv
 from esphome import pins
 from esphome.components import sensor
 from esphome.const import (
-    CONF_ID,
     CONF_PIN,
     STATE_CLASS_MEASUREMENT,
     UNIT_PERCENT,
@@ -17,25 +16,20 @@ DutyCycleSensor = duty_cycle_ns.class_(
 
 CONFIG_SCHEMA = (
     sensor.sensor_schema(
+        DutyCycleSensor,
         unit_of_measurement=UNIT_PERCENT,
         icon=ICON_PERCENT,
         accuracy_decimals=1,
         state_class=STATE_CLASS_MEASUREMENT,
     )
-    .extend(
-        {
-            cv.GenerateID(): cv.declare_id(DutyCycleSensor),
-            cv.Required(CONF_PIN): cv.All(pins.internal_gpio_input_pin_schema),
-        }
-    )
+    .extend({cv.Required(CONF_PIN): cv.All(pins.internal_gpio_input_pin_schema)})
     .extend(cv.polling_component_schema("60s"))
 )
 
 
 async def to_code(config):
-    var = cg.new_Pvariable(config[CONF_ID])
+    var = await sensor.new_sensor(config)
     await cg.register_component(var, config)
-    await sensor.register_sensor(var, config)
 
     pin = await cg.gpio_pin_expression(config[CONF_PIN])
     cg.add(var.set_pin(pin))