Revert "NEX-20260 NFS hung in transitional state when RSF marks it maintenance"
This reverts commit 9bf6e5f740709f470ba350df64cd9f2c93f3f0a7.

*** 1523,1532 ****
--- 1523,1533 ----
  
          rw_destroy(&nsrv4->rfs4_findclient_lock);
  
          /* First stop all of the reaper threads in the database */
          rfs4_database_shutdown(dbp);
+ 
          /*
           * WARNING: There may be consumers of the rfs4 database still
           * active as we destroy these.  IF that's the case, consider putting
           * some of their _zone_fini()-like functions into the zsd key as
           * ~~SHUTDOWN~~ functions instead of ~~DESTROY~~ functions.  We can