seg_inherit_notsup is redundant since segop_inherit checks for NULL properly

@@ -773,11 +773,10 @@
         .dump           = segkmem_dump,
         .pagelock       = segkmem_pagelock,
         .getmemid       = segkmem_getmemid,
         .getpolicy      = segkmem_getpolicy,
         .capable        = segkmem_capable,
-        .inherit        = seg_inherit_notsup,
 };
 
 int
 segkmem_zio_create(struct seg *seg)
 {