Removed the obsolete list from ubuntu

It wasn't a build-dep, and the only contents were packages not avaliable in trisquel.

helpers/make-ubuntu-release-upgrader

 #!/bin/sh
 #
 #    Copyright (C) 2008-2010  Rubén Rodríguez <ruben@trisquel.info>
+#    Copyright (C)      2014  Santiago Rodriguez <santi@trisquel.info>
 #
 #    This program is free software; you can redistribute it and/or modify
 #    it under the terms of the GNU General Public License as published by
@@ -20,8 +21,9 @@
 # Note that you would need to publish and sign the upgrade tarball
 # gpg -ba release_name.tar.gz
 # Also, don't forget to update the meta-release files at archive and packages.t.i
+# The "obsoletes" list from ubuntu has been removed
 
-VERSION=10
+VERSION=11
 
 . ./config
 
@@ -317,6 +319,10 @@ for i in core gtk qt; do
   sed "/Package: trisquel-release-upgrader-$i/ s/$/\nProvides: ubuntu-release-upgrader-$i/" -i debian/control
 done
 
+#ubuntu-drivers-common is not a build-dep, nor avaliable in trisquel.
+sed -i 's/cp \/usr\/share\/ubuntu-drivers-common\/obsolete/touch/g' DistUpgrade/build-tarball.sh
+
+
 changelog "Compiled for Trisquel"
 
 PARALLEL=false compile