Remove some dead code.   
Remove some dead code.   

* subversion/libsvn_client/ra.c
  (svn_client__open_ra_session): Remove code that does nothing other
   than waste cycles.


git-svn-id: f8a4e5e023278da1e04e203c7fe051e3c4285d88@846811 13f79535-47bb-0310-9956-ffa450edef68

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