Remove some redundant code.
Remove some redundant code.

* subversion/libsvn_client/update.c
  (svn_client__update_internal): Remove redundant setting of local variable
    'revnum', as it gets set a few lines further on before it is first used.

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