Remove comment that Karl added (The comment has been added to APR).
Remove comment that Karl added (The comment has been added to APR).

* subversion/clients/cmdline/cat-cmd.c
  (svn_cl__cat): Removed a comment about why APR i/o is preferable.

jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion,jmckaskill/subversion