Copter: remove redundant home-setting sanity checks

ArduCopter/GCS_Mavlink.cpp

@@ -699,10 +699,6 @@ MAV_RESULT GCS_MAVLINK_Copter::handle_command_long_packet(const mavlink_command_
             if (!is_zero(packet.param1)) {
                 return MAV_RESULT_FAILED;
             }
-            // sanity check location
-            if (!check_latlng(packet.param5, packet.param6)) {
-                return MAV_RESULT_FAILED;
-            }
             Location new_home_loc;
             new_home_loc.lat = (int32_t)(packet.param5 * 1.0e7f);
             new_home_loc.lng = (int32_t)(packet.param6 * 1.0e7f);
@@ -1253,10 +1249,6 @@ void GCS_MAVLINK_Copter::handleMessage(mavlink_message_t* msg)
                 // silently ignored
             }
         } else {
-            // sanity check location
-            if (!check_latlng(packet.latitude, packet.longitude)) {
-                break;
-            }
             Location new_home_loc;
             new_home_loc.lat = packet.latitude;
             new_home_loc.lng = packet.longitude;

ArduCopter/commands.cpp

@@ -58,11 +58,6 @@ bool Copter::set_home_to_current_location(bool lock) {
 //  returns true if home location set successfully
 bool Copter::set_home(const Location& loc, bool lock)
 {
-    // check location is valid
-    if (loc.lat == 0 && loc.lng == 0) {
-        return false;
-    }
-
     // check EKF origin has been set
     Location ekf_origin;
     if (!ahrs.get_origin(ekf_origin)) {