read_xed_db: clean up explicit operands list
read_xed_db: clean up explicit operands list

  * remove integers from broadcast operands, for example

Change-Id: I8de33eee31426af78ae11910adb1e99b8de1fb55
(cherry picked from commit 96986dd6f07d95fc67be79abff22ace8d0b4f605)

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