Replay: move AP_Airspeed to AP_Vehicle

Tools/Replay/Replay.cpp

@@ -58,9 +58,11 @@ const AP_Param::Info ReplayVehicle::var_info[] = {
     // @Path: ../libraries/AP_AHRS/AP_AHRS.cpp
     GOBJECT(ahrs,                   "AHRS_",    AP_AHRS),
 
+#if AP_AIRSPEED_ENABLED
     // @Group: ARSPD_
     // @Path: ../libraries/AP_Airspeed/AP_Airspeed.cpp
     GOBJECT(airspeed,                               "ARSP_",   AP_Airspeed),
+#endif
 
     // @Group: EK2_
     // @Path: ../libraries/AP_NavEKF2/AP_NavEKF2.cpp

Tools/Replay/Replay.h

@@ -46,7 +46,7 @@ public:
     virtual uint8_t get_mode() const override { return 0; }
 
     AP_Vehicle::FixedWing aparm;
-    AP_Airspeed airspeed;
+
     AP_Int32 unused; // logging is magic for Replay; this is unused
     struct LogStructure log_structure[256] = {
     };