Revert "Merge pull request #161 from overleaf/em-upgrade-node-12"

This reverts commit d44102751b9436ad89c5b3b05e7abdff51fcc78a, reversing
changes made to 6c2f5b8d053b75c677da2b7ddd04f998d2be6fff.

services/document-updater/test/unit/js/ProjectManager/updateProjectTests.js

@@ -22,11 +22,17 @@ describe('ProjectManager', function () {
     }
     this.Metrics.Timer.prototype.done = sinon.stub()
 
+    this.logger = {
+      log: sinon.stub(),
+      error: sinon.stub()
+    }
+
     this.ProjectManager = SandboxedModule.require(modulePath, {
       requires: {
         './RedisManager': this.RedisManager,
         './ProjectHistoryRedisManager': this.ProjectHistoryRedisManager,
         './DocumentManager': this.DocumentManager,
+        'logger-sharelatex': this.logger,
         './HistoryManager': this.HistoryManager,
         './Metrics': this.Metrics
       }