AP_EFI: Hirth: remove FieldBitmaskEnum logger doc #883

Job	Run time
build (stm32f7, chibios, 10)	8m 3s
build (stm32h7, chibios, 10)	20m 41s
build (fmuv2-plane, chibios, 10)	11m 23s
build (periph-build, chibios, 10)	9m 54s
build (iofirmware, chibios, 10)	4m 11s
build (CubeOrange-bootloader, chibios, 10)	3m 42s
build (revo-bootloader, chibios, 10)	3m 38s
build (stm32h7-debug, chibios, 10)	12m 49s
build (fmuv3, chibios, 10)	8m 47s
build (revo-mini, chibios, 10)	24m 20s
build (MatekF405-Wing, chibios, 10)	7m 48s
build (CubeOrange-ODID, chibios, 10)	15m 32s
build (configure-all, chibios, 10)	7m 24s
build (build-options-defaults-test, chibios, 10)	11m 23s
build (signing, chibios, 10)	17m 46s
	2h 47m 21s

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