Whitespace cleanup

* remove trailing whitespace
* remove empty lines at the end of files

plugins/tarsnap/tarsnap

@@ -3,14 +3,14 @@
 # Munin plugin for Tarsnap
 #
 # https://github.com/warrenguy/munin-tarsnap
-# 
+#
 # USAGE:
 #
 #   Add the following to your backup script (after tarsnap has run), or to a
 #   cron job:
 #
 #     /usr/local/bin/tarsnap --print-stats > /path/to/tarsnap-stats.txt
-#  
+#
 #   N.B.: ensure /path/to/munin-stats.txt is readable by munin-node. The
 #   default path this script tries is /var/lib/munin/tarsnap-stats.txt
 #
@@ -37,7 +37,7 @@ case $1 in
 multigraph tarsnap_total
 graph_title Tarsnap total data
 graph_vlabel bytes
-graph_category backup 
+graph_category backup
 total_size.label Total size
 total_compressed.label Total size (compressed)