Remove obsolete multi-db code.
Remove obsolete multi-db code.

* subversion/libsvn_wc/lock.c
  (svn_wc__internal_check_wc, svn_wc__acquire_write_lock,
   svn_wc__release_write_lock): Remove conditional multi-db code.
  (adm_available): Remove OBSTRUCTED parameter, remove conditional
   multi-db code.
  (do_open, open_anchor): Adjust call to adm_available, remove conditional 
   multi-db code.
  (acquire_locks_recursively): Remove.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@995798 13f79535-47bb-0310-9956-ffa450edef68

wbond/subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,wbond/subversion,wbond/subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion,YueLinHo/Subversion