nasm.h: remove obsolete IP_REG definitions
nasm.h: remove obsolete IP_REG definitions

projedi/nasm,letolabs/nasm,projedi/nasm,techkey/nasm,projedi/nasm,projedi/nasm,Distrotech/nasm,turingstudio/nasm,letolabs/nasm,Distrotech/nasm,Distrotech/nasm,turingstudio/nasm,techkey/nasm,techkey/nasm,letolabs/nasm,turingstudio/nasm,techkey/nasm,techkey/nasm,turingstudio/nasm,projedi/nasm,Distrotech/nasm