去除ch8控制relay

APMrover2/Rover.cpp

@@ -262,10 +262,10 @@ void Rover::update_logging2(void)
     }
     
     // underwater_sonar.update(serial_manager,current_loc);
-    uint16_t rc8_in = RC_Channels::rc_channel(CH_8)->get_radio_in();
+    // uint16_t rc8_in = RC_Channels::rc_channel(CH_8)->get_radio_in();
     // uint16_t rc9_in = RC_Channels::rc_channel(CH_9)->get_radio_in();
-    AP_Relay *_apm_relay = AP::relay();
-    rc8_in > 1500?_apm_relay->on(1):_apm_relay->off(1);
+    // AP_Relay *_apm_relay = AP::relay();
+    // rc8_in > 1500?_apm_relay->on(1):_apm_relay->off(1);
     // rc9_in > 1500?_apm_relay->on(2):_apm_relay->off(2);
 
 }