iio: imu: adis: Remove adis_initial_startup function

Remove adis_initial_startup function since it is not used
anymore.
Signed-off-by: Ramona Bolboaca <ramona.bolboaca@analog.com>
Reviewed-by: Nuno Sá <nuno.sa@analog.com>
Link: https://lore.kernel.org/r/20221122082757.449452-10-ramona.bolboaca@analog.comSigned-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

include/linux/iio/imu/adis.h

@@ -428,18 +428,6 @@ static inline int adis_check_status(struct adis *adis)
 	return ret;
 }
 
-/* locked version of __adis_initial_startup() */
-static inline int adis_initial_startup(struct adis *adis)
-{
-	int ret;
-
-	mutex_lock(&adis->state_lock);
-	ret = __adis_initial_startup(adis);
-	mutex_unlock(&adis->state_lock);
-
-	return ret;
-}
-
 static inline void adis_dev_lock(struct adis *adis)
 {
 	mutex_lock(&adis->state_lock);