AP_Arming: remove unused parameter and variable

libraries/AP_Arming/AP_Arming.cpp

@@ -745,7 +745,7 @@ AP_Arming::ArmingRequired AP_Arming::arming_required()
 
 // Copter and sub share the same RC input limits
 // Copter checks that min and max have been configured by default, Sub does not
-bool AP_Arming::rc_checks_copter_sub(const bool display_failure, const RC_Channel *channels[4], const bool check_min_max) const
+bool AP_Arming::rc_checks_copter_sub(const bool display_failure, const RC_Channel *channels[4]) const
 {
     // set rc-checks to success if RC checks are disabled
     if ((checks_to_perform != ARMING_CHECK_ALL) && !(checks_to_perform & ARMING_CHECK_RC)) {

libraries/AP_Arming/AP_Arming.h

@@ -87,7 +87,6 @@ protected:
 
     // internal members
     bool                    armed:1;
-    bool                    logging_available:1;
     uint32_t                last_accel_pass_ms[INS_MAX_INSTANCES];
     uint32_t                last_gyro_pass_ms[INS_MAX_INSTANCES];
 
@@ -118,7 +117,7 @@ protected:
     virtual bool system_checks(bool report);
     
     bool servo_checks(bool report) const;
-    bool rc_checks_copter_sub(bool display_failure, const RC_Channel *channels[4], const bool check_min_max = true) const;
+    bool rc_checks_copter_sub(bool display_failure, const RC_Channel *channels[4]) const;
 
     // returns true if a particular check is enabled
     bool check_enabled(const enum AP_Arming::ArmingChecks check) const;