everything: Remove filename from @file Doxygen command

boards/airfy-beacon/board.c

boards/arduino-due/board.c

boards/arduino-mega2560/board.c

boards/fox/board.c

boards/iot-lab_M3/board.c

boards/mbed_lpc1768/system.c

boards/pca10000/board.c

boards/pca10005/board.c

boards/samr21-xpro/board.c

boards/udoo/board.c

boards/yunjia-nrf51822/board.c

boards/z1/board.c

boards/z1/driver_cc2420.c

boards/z1/uart.c

core/bitarithm.c

core/clist.c

core/hwtimer.c

core/include/arch/atomic_arch.h

core/include/arch/hwtimer_arch.h

core/include/arch/irq_arch.h