[file-roller] Remove unneeded ur_PK translation file

[Piotr Drąg <piotrdrag src gnome org>]

commit 88a5a67ed46e151cbb556a7cb6270ea32f429cda
Author: Piotr Drąg <piotrdrag gmail com>
Date:   Sat May 25 19:07:55 2013 +0200

    Remove unneeded ur_PK translation file
    
    file-roller's ur_PK.po is the only ur_PK locale file on my system,
    and the correct one is ur.po anyway.

 po/ur_PK.po | 1204 -----------------------------------------------------------
 1 files changed, 0 insertions(+), 1204 deletions(-)