aerofc: Remove call to board_dma_alloc_init()
aerofc: Remove call to board_dma_alloc_init()

This commit will only remove the error message from serial console as
this board don't define BOARD_DMA_ALLOC_POOL_SIZE.

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