rcS: remove hack
rcS: remove hack

The mavlink instance USB can now be shutdown, so this hack is not needed
anymore.

krbeverx/Firmware,mcgill-robotics/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,PX4/Firmware,dagar/Firmware,krbeverx/Firmware,mcgill-robotics/Firmware,mje-nz/PX4-Firmware,jlecoeur/Firmware,mcgill-robotics/Firmware,darknight-007/Firmware,krbeverx/Firmware,mcgill-robotics/Firmware,darknight-007/Firmware,Aerotenna/Firmware,acfloria/Firmware,krbeverx/Firmware,acfloria/Firmware,mcgill-robotics/Firmware,jlecoeur/Firmware,mje-nz/PX4-Firmware,mcgill-robotics/Firmware,dagar/Firmware,dagar/Firmware,jlecoeur/Firmware,dagar/Firmware,jlecoeur/Firmware,acfloria/Firmware,Aerotenna/Firmware,Aerotenna/Firmware,jlecoeur/Firmware,Aerotenna/Firmware,dagar/Firmware,darknight-007/Firmware,darknight-007/Firmware,acfloria/Firmware,PX4/Firmware,mje-nz/PX4-Firmware,Aerotenna/Firmware,PX4/Firmware,krbeverx/Firmware,dagar/Firmware,dagar/Firmware,acfloria/Firmware,jlecoeur/Firmware,krbeverx/Firmware,mcgill-robotics/Firmware,acfloria/Firmware,mje-nz/PX4-Firmware,jlecoeur/Firmware,mje-nz/PX4-Firmware,mje-nz/PX4-Firmware,jlecoeur/Firmware,PX4/Firmware,krbeverx/Firmware,PX4/Firmware,acfloria/Firmware,PX4/Firmware,Aerotenna/Firmware,Aerotenna/Firmware,darknight-007/Firmware