seg_inherit_notsup is redundant since segop_inherit checks for NULL properly

*** 110,120 ****
          .dump           = segmap_dump,
          .pagelock       = segmap_pagelock,
          .getmemid       = segmap_getmemid,
          .getpolicy      = segmap_getpolicy,
          .capable        = segmap_capable,
-         .inherit        = seg_inherit_notsup,
  };
  
  /*
   * Private segmap routines.
   */
--- 110,119 ----