Fix lintian Errors

debian/control

@@ -3,8 +3,7 @@ Section: python
 Priority: optional
 Maintainer: Nikos Skalkotos <skalkoto@grnet.gr>
 Build-Depends: debhelper (>= 8), python-all (>= 2.5)
-Standards-Version: 3.9.2
-XS-Python-Version: >= 2.6
+Standards-Version: 3.9.3
 Homepage: https://code.grnet.gr/projects/snf-image-creator
 
 Package: snf-image-creator
@@ -12,7 +11,6 @@ Architecture: all
 Depends: ${misc:Depends}, ${python:Depends}, python-progress (>=1.0.2),
  python-ansicolors, python-dialog, kamaki(>=0.6), python-guestfs,
  python-sendfile(<< 2.0), python-parted, rsync
-XB-Python-Version: ${python:Versions}
 Description: Synnefo Image Creator
  snf-image-creator is a command line tool for creating OS images to be used
  with synnefo.

debian/copyright

@@ -5,9 +5,7 @@ Source: https://code.grnet.gr/projects/snf-image-creator
 
 Files: *
 Copyright: Copyright (C) 2011, 2012 GRNET S.A.
-Licence: BSD-2-clause
-
-Licence: BSD-2-clause
+License: BSD-2-clause
  Redistribution and use in source and binary forms, with or
  without modification, are permitted provided that the following
  conditions are met: