AP_Follow: change to using position-from-origin internally #41973

Job	Run time
build (stm32f7, chibios, 10)	6m 27s
build (stm32h7, chibios, 10)	6m 34s
build (fmuv2-plane, chibios, 10)	4m 47s
build (periph-build, chibios, 10)	5m 28s
build (iofirmware, chibios, 10)	3m 34s
build (CubeOrange-bootloader, chibios, 10)	3m 3s
build (fmuv3-bootloader, chibios, 10)	3m 12s
build (revo-bootloader, chibios, 10)	3m 3s
build (stm32h7-debug, chibios, 10)	5m 5s
build (fmuv3, chibios, 10)	9m 44s
build (revo-mini, chibios, 10)	6m 59s
build (MatekF405-Wing, chibios, 10)	7m 21s
build (CubeOrange-ODID, chibios, 10)	5m 53s
build (CubeRedPrimary-bootloader, chibios, 10)	2m 53s
build (configure-all, chibios, 10)	12m 28s
build (build-options-defaults-test, chibios, 10)	12m 48s
build (signing, chibios, 10)	5m 40s
build (CubeOrange-PPP, chibios, 10)	4m 50s
build (CubeOrange-EKF2, chibios, 10)	4m 46s
build (SOHW, chibios, 10)	6m 10s
build (Pixhawk6X-PPPGW, chibios, 10)	3m 40s
build (new-check, chibios, 10)	8m 42s
	2h 13m 7s

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