Remove the bios emulator binary files from MAI board

board/MAI/bios_emulator/scitech/bin-linux/glibc/dmake

board/MAI/bios_emulator/scitech/bin-linux/glibc/k_cp

board/MAI/bios_emulator/scitech/bin-linux/glibc/k_echo

board/MAI/bios_emulator/scitech/bin-linux/glibc/k_rm

board/MAI/bios_emulator/scitech/bin-linux/glibc/makedep

board/MAI/bios_emulator/scitech/bin-linux/glibc/nasm

board/MAI/bios_emulator/scitech/bin-linux/glibc/ndisasm

board/MAI/bios_emulator/scitech/bin-linux/glibc/trans

board/MAI/bios_emulator/scitech/bin-linux/libc/dmake

board/MAI/bios_emulator/scitech/bin-linux/libc/nasm

board/MAI/bios_emulator/scitech/bin-linux/libc/ndisasm

board/MAI/bios_emulator/scitech/bin-linux/libc/trans

board/MAI/bios_emulator/scitech/makedefs/makedefs.prj

board/MAI/bios_emulator/scitech/src/pm/os2/dossctl.obj