Tool cleanup. Remove the old experimental svn-rep-sharing-stats tool.
It has been made obsolete by 'svnfsfs stats'.

* build.conf
  (__MORE__): Don't reference the tool anymore.
  (svn-rep-sharing-stats): Remove.

* tools/server-side/svn-rep-sharing-stats.c: Remove.


git-svn-id: https://svn.apache.org/repos/asf/subversion/trunk@1618861 13f79535-47bb-0310-9956-ffa450edef68