Fixed warnings on purge, directories were not empty

debian/debian/jenkins.postrm

 #!/bin/sh
-# postrm script for jenkins
-#
-# see: dh_installdeb(1)
 
 set -e
 
-# summary of how this script can be called:
-#        * <postrm> `remove'
-#        * <postrm> `purge'
-#        * <old-postrm> `upgrade' <new-version>
-#        * <new-postrm> `failed-upgrade' <old-version>
-#        * <new-postrm> `abort-install'
-#        * <new-postrm> `abort-install' <old-version>
-#        * <new-postrm> `abort-upgrade' <old-version>
-#        * <disappearer's-postrm> `disappear' <overwriter>
-#          <overwriter-version>
-# for details, see http://www.debian.org/doc/debian-policy/ or
-# the debian-policy package
-
-# TODO: Remove cached/temp files
-
 case "$1" in
     purge)
-	userdel jenkins || true
-    # TODO: remove log files rm -rf /var/log/jenkins
+        userdel jenkins || true
+        rm -rf /var/lib/jenkins /var/log/jenkins /var/run/jenkins
     ;;
-    
+
     remove|upgrade|failed-upgrade|abort-install|abort-upgrade|disappear)
     ;;
 
@@ -35,11 +17,6 @@ case "$1" in
     ;;
 esac
 
-# dh_installdeb will replace this with shell code automatically
-# generated by other debhelper scripts.
-
 #DEBHELPER#
 
 exit 0
-
-