sensors: removed unused variable

src/modules/sensors/sensors.cpp

@@ -252,7 +252,6 @@ private:
 	math::Matrix<3, 3>	_board_rotation;	/**< rotation matrix for the orientation that the board is mounted */
 	math::Matrix<3, 3>	_mag_rotation[3];	/**< rotation matrix for the orientation that the external mag0 is mounted */
 
-	uint64_t _battery_discharged;			/**< battery discharged current in mA*ms */
 	hrt_abstime _battery_current_timestamp;		/**< timestamp of last battery current reading */
 
 	Battery		_battery;			/**< Helper lib to publish battery_status topic. */
@@ -557,7 +556,6 @@ Sensors::Sensors() :
 	_board_rotation{},
 	_mag_rotation{},
 
-	_battery_discharged(0),
 	_battery_current_timestamp(0)
 {
 	/* initialize subscriptions */