5261 libm should stop using synonyms.h

@@ -28,11 +28,10 @@
 
         .file   "scalbnl.s"
 
 #include "libm.h"
 LIBM_ANSI_PRAGMA_WEAK(scalbnl,function)
-#include "libm_synonyms.h"
 
         ENTRY(scalbnl)
         subq    $16,%rsp
         movl    %edi,(%rsp)
         fildl   (%rsp)