Remove unused file in nrf port.
Remove unused file in nrf port.

openmv/openmv,openmv/openmv,openmv/openmv,iabdalkader/openmv,iabdalkader/openmv,kwagyeman/openmv,openmv/openmv,iabdalkader/openmv,kwagyeman/openmv,kwagyeman/openmv,kwagyeman/openmv,iabdalkader/openmv