Cleanup unused code related move heuristic detection from command line 
client.

* subversion/svn/cl.h
  (svn_cl__opt_state_t): Remove auto_moves member.
   
* subversion/svn/svn.c
  (svn_cl__longopt_t): Remove opt_auto_moves.
  (svn_cl__options): Remove "--auto-moves" command line option.
  (sub_main): Do not handle opt_auto_moves.

git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1606094 13f79535-47bb-0310-9956-ffa450edef68