progress: empty the extension of any logic

The default value match the one enforce by the extension, we can remove that
logic.

hgext/progress.py

@@ -1,21 +1,14 b''
 # progress.py show progress bars for some actions
 #
 # Copyright (C) 2010 Augie Fackler <[e-mail]>
 #
 # This software may be used and distributed according to the terms of the
 # GNU General Public License version 2 or any later version.
 
 """show progress bars for some actions
 
 This extension uses the progress information logged by hg commands
 to draw progress bars that are as informative as possible. Some progress
 bars only offer indeterminate information, while others have a definite
 end point.
 """
-
-def uisetup(ui):
-    if ui.config('progress', 'disable', None) is None:
-        ui.setconfig('progress', 'disable', 'False', 'hgext-progress')
-
-def reposetup(ui, repo):
-    uisetup(repo.ui)