5261 libm should stop using synonyms.h

@@ -28,11 +28,10 @@
 
         .file   "log10l.s"
 
 #include "libm.h"
 LIBM_ANSI_PRAGMA_WEAK(log10l,function)
-#include "libm_synonyms.h"
 
         ENTRY(log10l)
         fldlg2  
         fldt    8(%rsp)                 / st = arg, st(1) = log10(2)
         fyl2x                           / st = log10(arg) = log10(2)*log2(arg)