debian/watch: comment out all lines for now, as tarball source is from git with submodules

debian/watch

 version=4
-opts=pgpsigurlmangle=s/$/.sig/ \
-https://dl.mumble.info/mumble-(\d+\.\d+\.\d+)\.tar\.gz
-
+## Note: right now the shipped PGP signature is not checked, due to needing
+##       to repack the upstream tarball to remove unreleasable files.
+##opts=pgpsigurlmangle=s/$/.sig/ \
+#opts="repack,repacksuffix=+repack,\
+#dversionmangle=s/(\da?)[\+\.\-~](?:dfsg|debian|ds|repack|repacked)\.?\d*$/$1/" \
+#https://dl.mumble.info/mumble-(\d+\.\d+\.\d+\~\d+\~g.+)\~snapshot\.tar\.gz