DEB build scripts: remove dead branches from all "remote"s, not only

from "origin"

Signed-off-by: Michele Calgaro <michele.calgaro@yahoo.it>

debian/_buildscripts/local/update_repositories.sh

@@ -77,6 +77,9 @@ function _do_update()
 					eval git reset --hard HEAD $OPT_VERBOSE_LOG
 					eval git clean -dxff $OPT_VERBOSE_LOG
 					eval git fetch $OPT_VERBOSE_LOG
+					for _remote in `git remote`; do
+						eval git remote prune $_remote $OPT_VERBOSE_LOG
+					done
 					if [[ $(git rev-parse HEAD) != $(git rev-parse "origin/$BRANCH") ]]; then
 						eval git pull --rebase $GIT_NO_RECURSE_SUBMODULES $OPT_VERBOSE_LOG
 						if [[ `git rev-parse HEAD` == `git rev-parse "origin/$BRANCH"` ]]; then