Delete nrf-relative code
Delete nrf-relative code

We do not use nrf2401 for data transmission now.

UrsusPilot/firmware,fboris/firmware,zxc2694/moonbear-firmware,ming6842/firmware,zxc2694/moonbear-firmware,fboris/firmware,ming6842/firmware-new,ming6842/firmware-new,UrsusPilot/firmware,ming6842/firmware,ming6842/firmware,fboris/firmware,shengwen1997/moonbear-firmware,shengwen1997/moonbear-firmware,UrsusPilot/firmware,ming6842/firmware-new,zxc2694/moonbear-firmware,shengwen1997/moonbear-firmware