Remove extra copy of bootinfo.c. It's a bit rotted copy of the one in
authorimp <imp@FreeBSD.org>
Fri, 19 Jan 2018 19:09:17 +0000 (19:09 +0000)
committerimp <imp@FreeBSD.org>
Fri, 19 Jan 2018 19:09:17 +0000 (19:09 +0000)
commitc3199280658318ffc29ae6bcbc2e93c6591dc22a
tree53e823aa704b5f4149f73ab463cd7f2c043a44f4
parente79f2b9178164cd2a849cf2496f988d5c7d67fa3
Remove extra copy of bootinfo.c. It's a bit rotted copy of the one in
efi/loader.

Differential Review: https://reviews.freebsd.org/D13986
stand/efi/loader/arch/i386/bootinfo.c [deleted file]