seg_inherit_notsup is redundant since segop_inherit checks for NULL properly

*** 212,222 ****
          .pagelock       = segdev_pagelock,
          .setpagesize    = segdev_setpagesize,
          .getmemid       = segdev_getmemid,
          .getpolicy      = segdev_getpolicy,
          .capable        = segdev_capable,
-         .inherit        = seg_inherit_notsup,
  };
  
  /*
   * Private segdev support routines
   */
--- 212,221 ----