/xed-encode-direct.h: remove imm0, imm1 fields unused
/xed-encode-direct.h: remove imm0, imm1 fields unused

Change-Id: Ie2a588eb7dc041e8c136f6d59f1637b617bcd3cb
(cherry picked from commit f07f3bad946105b25bf756dcd9a1c038dc43f991)

intelxed/xed,intelxed/xed,intelxed/xed,intelxed/xed