AP_GPS: remove incorrect build option on GPS_DRV_OPTIONS param

libraries/AP_GPS/AP_GPS.cpp

@@ -308,14 +308,12 @@ const AP_Param::GroupInfo AP_GPS::var_info[] = {
     AP_GROUPINFO("_BLEND_TC", 21, AP_GPS, _blend_tc, 10.0f),
 #endif
 
-#if GPS_MOVING_BASELINE
     // @Param: _DRV_OPTIONS
     // @DisplayName: driver options
     // @Description: Additional backend specific options
     // @Bitmask: 0:Use UART2 for moving baseline on ublox,1:Use base station for GPS yaw on SBF,2:Use baudrate 115200,3:Use dedicated CAN port b/w GPSes for moving baseline,4:Use ellipsoid height instead of AMSL for uBlox driver
     // @User: Advanced
     AP_GROUPINFO("_DRV_OPTIONS", 22, AP_GPS, _driver_options, 0),
-#endif
 
 #if AP_GPS_SBF_ENABLED
     // @Param: _COM_PORT