website: Remove Legacy and AArch32 Linux build documentation

Signed-off-by: Giacomo Travaglini <giacomo.travaglini@arm.com>
Change-Id: Ie18447f783790bc3f2ba1d1dc0400a32810c23c4
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5-website/+/43726
Reviewed-by: Bobby R. Bruce <bbruce@ucdavis.edu>
Maintainer: Bobby R. Bruce <bbruce@ucdavis.edu>
Tested-by: Bobby R. Bruce <bbruce@ucdavis.edu>
1 file changed