lintian fixes

debian/README.Debian

@@ -1,8 +0,0 @@
-debian-junior-live for Debian
-
-Please edit this to provide information specific to
-this debian-junior-live Debian package.
-
-    (Automatically generated by debmake Version 4.3.2)
-
- -- Stefan Kropp <stefan.kropp@posteo.de>  Sat, 04 Jun 2022 03:51:01 +0200

debian/copyright

@@ -5,4 +5,6 @@ Source: https://wiki.debian.org/DebianJr
 
 Files: * 
 Copyright: 2022 Stefan Kropp <stefan.kropp@posteo.de>  
-License:   GPL-3+ 
+License: GPL-3+
+ On Debian systems, the complete text of the GNU General
+ Public License version 3 can be found in "/usr/share/common-licenses/GPL-3".

debian/watch

@@ -1,6 +0,0 @@
-version=4
-opts="mode=git" \
-https://salsa.debian.org/debian-jr-team/debian-junior-live-system.git \
-refs/tags/@ANY_VERSION@ \
-debian
-