AP_Arming: remove unused set_skip_gyro_cal

libraries/AP_Arming/AP_Arming.cpp

@@ -44,7 +44,6 @@ AP_Arming::AP_Arming(const AP_AHRS &ahrs_ref, const AP_Baro &baro, Compass &comp
                      const enum HomeState &home_set)
     : armed(false)
    , logging_available(false)
-   , skip_gyro_cal(false)
    , arming_method(NONE)
    , ahrs(ahrs_ref)
    , barometer(baro)
@@ -130,7 +129,7 @@ bool AP_Arming::ins_checks(bool report)
             }
             return false;
         }
-        if (!skip_gyro_cal && ! ins.gyro_calibrated_ok_all()) {
+        if (!ins.gyro_calibrated_ok_all()) {
             if (report) {
                 GCS_MAVLINK::send_statustext_all(MAV_SEVERITY_CRITICAL, PSTR("PreArm: gyros not calibrated!"));
             }

libraries/AP_Arming/AP_Arming.h

@@ -58,7 +58,6 @@ public:
       in a vehicle specific subclass
     */
     virtual bool pre_arm_checks(bool report);
-    void set_skip_gyro_cal(bool set) { skip_gyro_cal = set; }
 
     void set_logging_available(bool set) { logging_available = set; }
 
@@ -68,7 +67,6 @@ public:
 protected:
     bool                                                armed:1;
     bool                                                logging_available:1;
-    bool                                                skip_gyro_cal:1;
 
     //Parameters
     AP_Int8                                           require;