Remove simpleauth

Simple Auth used to provide auth over HTTP. The original motivation
behind this was this was a simple way to add Cloudron Auth integration.
Back in the day, Cloudron Auth was a requirement for apps but this is
not the case anymore.

This is currently not used by any app and having this might encourage
people to make Cloudron specific un-upstreamable changes.

src/config.js

@@ -84,7 +84,6 @@ function initConfig() {
     data.smtpPort = 2525; // // this value comes from mail container
     data.sysadminPort = 3001;
     data.ldapPort = 3002;
-    data.simpleAuthPort = 3004;
     data.provider = 'caas';
     data.appBundle = [ ];