systemlib delete unused systemlib.h

src/drivers/blinkm/blinkm.cpp

src/drivers/boards/aerofc-v1/init.c

src/drivers/boards/auav-x21/init.c

src/drivers/boards/crazyflie/init.c

src/drivers/boards/esc35-v1/init.c

src/drivers/boards/mindpx-v2/init.c

src/drivers/boards/nxphlite-v3/init.c

src/drivers/boards/omnibus-f4sd/init.c

src/drivers/boards/px4-same70xplained-v1/init.c

src/drivers/boards/px4cannode-v1/init.c

src/drivers/boards/px4esc-v1/init.c

src/drivers/boards/px4flow-v2/init.c

src/drivers/boards/px4fmu-v2/init.c

src/drivers/boards/px4fmu-v4/init.c

src/drivers/boards/px4fmu-v4pro/init.c

src/drivers/boards/px4fmu-v5/init.c

src/drivers/boards/px4nucleoF767ZI-v1/init.c

src/drivers/boards/s2740vc-v1/init.c

src/drivers/boards/tap-v1/init.c

src/drivers/boards/zubaxgnss-v1/gnss_init.c