Remove m4 as an explicity installed package as it will be installed automatically by flex and bison. Change-Id: Ic4f1c5e6f3324429914bf593047d802dfcc0cb30 Signed-off-by: Elyes Haouas <ehaouas@noos.fr> Reviewed-on: https://review.coreboot.org/c/coreboot/+/82512 Reviewed-by: Martin L Roth <gaumless@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>