Remove redundant patch

Author: tomgreenfield

lib/application.js

@@ -290,17 +290,9 @@ Origin.prototype.createServer = function (options, cb) {
       requestDomain.session = req.session;
       requestDomain.on('error', next);
       requestDomain.run(next);
-      req.domain = requestDomain;
     });
     server.use(auth.initialize());
     server.use(auth.session());
-    server.use((req, res, next) => {
-      if (!process.domain) {
-        // set process.domain again, fixes adaptlearning/adapt_authoring#2504
-        req.domain.enter();
-      }
-      next();
-    });
     server.use(express.static(path.join(require('./configuration').serverRoot, 'frontend', 'build')));
     server.use(express.static(path.join(require('./configuration').serverRoot, 'frontend', 'src', 'libraries')));
     if(!app.configuration.getConfig('isProduction')) {