Hello,
TruckersMP currently only support these mods:
ProMods Europe (with optional Middle-East Add-On Pack): https://truckersmp.com/kb/614. (For ETS2 only) (Trailer & Company Pack addon is not supported)
ProMods Canada: https://truckersmp.com/kb/1122. (For ATS only)
Grimes' Spring Graphics/Weather: https://truckersmp.com/kb/856. (Both ETS2 and ATS are supported) (Darker Night Skies is not supported)
Any other mods are not supported on TMP, which means you cannot use any mods to remove the mouse steering HUD from your screen.
There should be no way to remove that HUD unless you use other control methods, you can read another related thread here:
Or, if you do know how to edit ETS files this might help you: https://forum.scssoft.com/viewtopic.php?t=215122
Best Regards,
WindowsTen