remove graylog

At some point I started to replace logstash with graylog but didn't
finish. Reverting back to logstash for now.

containers/graylog

@@ -1,22 +0,0 @@
-#!/bin/bash
-# Configure Logstash for Odin
-# 
-
-echo -e "\e[93m"
-
-log() {
-    echo -e "\t\e[96m[*]${1}\e[93m"
-}
-
-export IP=$(ip route | awk '/src/{print $9}')
-echo "logstash" >/etc/hostname
-echo -e "${IP}\tlogstash" >> /etc/hosts
-
-deluser -q --remove-home ubuntu
-
-apt-get update || exit 1
-apt-get --purge remove snapd lxd -y
-apt-get upgrade -y
-apt-get install -y htop wget openjdk-8-jre-headless uuid-runtime pwgen mongodb-server prometheus-node-exporter
-
-echo -e "\e[0m"