[PATCH, obvious, i386] Remove duplicate check for CLZERO.

[Kirill Yukhin]

Hello,
ix86_target_macros_internal () contains duplicated check of `clzero'
option.
I've committed to main trunk as obvious patch in the bottom.

gcc/
	* config/i386/i386-c.c (ix86_target_macros_internal): Remove
	duplicate check (__CLZERO__).

--
Thanks, K

Index: gcc/config/i386/i386-c.c
===================================================================
--- gcc/config/i386/i386-c.c    (revision 231687)
+++ gcc/config/i386/i386-c.c    (revision 231688)
@@ -439,8 +439,6 @@
     def_or_undef (parse_in, "__CLWB__");
   if (isa_flag & OPTION_MASK_ISA_MWAITX)
     def_or_undef (parse_in, "__MWAITX__");
-  if (isa_flag & OPTION_MASK_ISA_CLZERO)
-    def_or_undef (parse_in, "__CLZERO__");
   if (TARGET_IAMCU)
     {
       def_or_undef (parse_in, "__iamcu");