throttle and remove some osd updates #50

Job	Run time
build (stm32f7, chibios, 6)	24s
build (stm32f7, chibios, 10)	27s
build (stm32h7, chibios, 6)	24s
build (stm32h7, chibios, 10)	25s
build (fmuv2-plane, chibios, 10)	30s
build (periph-build, chibios, 10)	26s
build (iofirmware, chibios, 6)	30s
build (iofirmware, chibios, 10)	23s
build (CubeOrange-bootloader, chibios, 6)	26s
build (CubeOrange-bootloader, chibios, 10)	25s
build (fmuv3-bootloader, chibios, 10)	28s
build (revo-bootloader, chibios, 6)	21s
build (revo-bootloader, chibios, 10)	26s
build (stm32h7-debug, chibios, 6)	24s
build (stm32h7-debug, chibios, 10)	29s
build (fmuv3, chibios, 6)	30s
build (fmuv3, chibios, 10)	21s
build (revo-mini, chibios, 10)	31s
build (MatekF405-Wing, chibios, 10)	21s
build (CubeOrange-ODID, chibios, 10)	31s
build (configure-all, chibios, 6)	24s
build (configure-all, chibios, 10)	27s
build (build-options-defaults-test, chibios, 6)	22s
build (build-options-defaults-test, chibios, 10)	26s
build (signing, chibios, 10)	25s
build (stm32h7, chibios-py2)	24s
	11m 10s

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