Revert "libhugetlbfs: Add i586 to list of compatible host architectures"

It's still failing in world builds even when
"libhugetlbfs: x86 - don't link against host libs" is applied as well.

It was reported month ago:
https://www.mail-archive.com/openembedded-devel@lists.openembedded.org/msg41565.html

This reverts commit 3cc7f186.