Also remove deprecated defaults file

Config is provided by templates. We don't want
apt to prompt for overwrites

debian/mediator.default

@@ -1,19 +0,0 @@
-RUN_MEDIATOR="yes"
-PIDFILE="/var/run/mediator.pid"
-FORK="yes"
-INTERVAL="10"
-SOURCE_HOST="localhost"
-SOURCE_PORT="3306"
-SOURCE_USER="mediator"
-SOURCE_PASS='GimmeAllUr$$$'
-SOURCE_DB="accounting"
-DEST_HOST="localhost"
-DEST_PORT="3306"
-DEST_USER="mediator"
-DEST_PASS='GimmeAllUr$$$'
-DEST_DB="accounting"
-PROV_HOST="localhost"
-PROV_PORT="3306"
-PROV_USER="mediator"
-PROV_PASS='GimmeAllUr$$$'
-PROV_DB="provisioning"