hwmon: Drop unused mutexes in two drivers

Signed-off-by: Jean Delvare <khali@linux-fr.org>

drivers/hwmon/adm1026.c

@@ -261,7 +261,6 @@ struct pwm_data {
 struct adm1026_data {
 	struct i2c_client client;
 	struct class_device *class_dev;
-	struct mutex lock;
 	enum chips type;
 
 	struct mutex update_lock;