pkg/runtest: re-enable 32-bit test target tests on FreeBSD
pkg/runtest: re-enable 32-bit test target tests on FreeBSD

They now pass since we set DataOffset correctly for those targets.
This reverts 594e57536fbab6e403f888f0831240448ffc810d.

google/syzkaller,xairy/syzkaller,xairy/syzkaller,xairy/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,google/syzkaller,google/syzkaller,google/syzkaller,xairy/syzkaller,google/syzkaller,xairy/syzkaller