delete useless files and lint

Author: Florent-Bouisset

tests/integration/globalSetup.js

@@ -5,5 +5,5 @@ import TestContentServer from "../contents/server.mjs";
 export default () => {
   // Start the server content prior to unit tests
   const CONTENT_SERVER_PORT = 3000;
-  const testContentServer = TestContentServer(CONTENT_SERVER_PORT);
+  TestContentServer(CONTENT_SERVER_PORT);
 };