Rover: devo telemetry no long requires singleton classes to be passed in

APMrover2/Rover.h

@@ -299,7 +299,7 @@ private:
     AP_Frsky_Telem frsky_telemetry;
 #endif
 #if DEVO_TELEM_ENABLED == ENABLED
-    AP_DEVO_Telem devo_telemetry{ahrs};
+    AP_DEVO_Telem devo_telemetry;
 #endif
 
     uint32_t control_sensors_present;

APMrover2/system.cpp

@@ -87,7 +87,7 @@ void Rover::init_ardupilot()
     frsky_telemetry.init((is_boat() ? MAV_TYPE_SURFACE_BOAT : MAV_TYPE_GROUND_ROVER));
 #endif
 #if DEVO_TELEM_ENABLED == ENABLED
-    devo_telemetry.init(serial_manager);
+    devo_telemetry.init();
 #endif
 
 #if OSD_ENABLED == ENABLED