Remove a new public API for reintegrate merge that I introduced since 1.7.
We don't want it now because it's superseded by the automatic merge API.
There is a small functional change: the '--verbose' option will no longer
print any extra messages during a reintegrate merge -- but that option is
new since 1.7 so that doesn't matter.

* subversion/include/svn_client.h,
  subversion/libsvn_client/merge.c
  (svn_client_find_reintegrate_merge): Delete.

* subversion/svn/merge-cmd.c
  (merge_reintegrate): Delete.
  (svn_cl__merge): Call the old svn_client_merge_reintegrate() function
    directly.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1437071 13f79535-47bb-0310-9956-ffa450edef68