Remove unneeded call active check in modbus (#136487)

We have an asyncio.Lock in place to prevent polling collisions
now so this is no longer needed

Co-authored-by: Joost Lekkerkerker <joostlek@outlook.com>
Co-authored-by: Shay Levy <levyshay1@gmail.com>

homeassistant/components/modbus/binary_sensor.py

@@ -107,13 +107,9 @@ class ModbusBinarySensor(BasePlatform, RestoreEntity, BinarySensorEntity):
         """Update the state of the sensor."""
 
         # do not allow multiple active calls to the same platform
-        if self._call_active:
-            return
-        self._call_active = True
         result = await self._hub.async_pb_call(
             self._slave, self._address, self._count, self._input_type
         )
-        self._call_active = False
         if result is None:
             self._attr_available = False
             self._result = []

homeassistant/components/modbus/entity.py

@@ -88,7 +88,6 @@ class BasePlatform(Entity):
         self._input_type = entry[CONF_INPUT_TYPE]
         self._value: str | None = None
         self._scan_interval = int(entry[CONF_SCAN_INTERVAL])
-        self._call_active = False
         self._cancel_timer: Callable[[], None] | None = None
         self._cancel_call: Callable[[], None] | None = None
 
@@ -389,13 +388,9 @@ class BaseSwitch(BasePlatform, ToggleEntity, RestoreEntity):
             return
 
         # do not allow multiple active calls to the same platform
-        if self._call_active:
-            return
-        self._call_active = True
         result = await self._hub.async_pb_call(
             self._slave, self._verify_address, 1, self._verify_type
         )
-        self._call_active = False
         if result is None:
             self._attr_available = False
             return