[gnome-user-docs] Three stub pages deleted

[Jana Svarova <jsvarova src gnome org>]

commit a5e90eedc1c5ff7a0d12c7daf07ab4af135fcdd7
Author: Jana Svarova <jsvarova redhat com>
Date:   Fri Jun 7 15:40:37 2013 +0200

    Three stub pages deleted
    
    The stub pages are empty and the relevant content
    is already present elsewhere.
    custom-session.page.stub
    keyboard-layout.page.stub
    user-session.page.stub

 system-admin-guide/C/custom-session.page.stub  |   33 ------------------------
 system-admin-guide/C/keyboard-layout.page.stub |   33 ------------------------
 system-admin-guide/C/user-session.page.stub    |   33 ------------------------
 3 files changed, 0 insertions(+), 99 deletions(-)