5261 libm should stop using synonyms.h

*** 28,38 ****
  
          .file "fmodf.s"
  
  #include "libm.h"
  LIBM_ANSI_PRAGMA_WEAK(fmodf,function)
- #include "libm_synonyms.h"
  
          ENTRY(fmodf)
          flds    8(%esp)                 / load arg y
          flds    4(%esp)                 / load arg x
  .mod_loop:
--- 28,37 ----