Fix: "Port is blocked" issue

Fixed an issue where the post intall file for Debian enforced port 6000
which should have been port 3000 because it renders the software virtually unusable
because it's a blocked port in Firefox, Chrome and alikes.

For further reference see:
http://www-archive.mozilla.org/projects/netlib/PortBanning.html

packager/debian/postinst

@@ -18,8 +18,6 @@ case "$1" in
     chown ${APP_USER}.${APP_GROUP} $(dirname ${APP_CONFIG})
     [ -f ${APP_CONFIG} ] || ${CLI} run cp conf/app.ini ${APP_CONFIG}
     ${CLI} config:set USER=${APP_USER}
-    PORT=$(${CLI} config:get PORT || echo "6000")
-    sed -i "s|HTTP_PORT = 3000|HTTP_PORT = ${PORT}|" ${APP_CONFIG}
     sed -i "s|RUN_USER = git|RUN_USER = ${APP_USER}|" ${APP_CONFIG}
     sed -i "s|RUN_MODE = dev|RUN_MODE = prod|" ${APP_CONFIG}