revert cypress (#103658)

x-pack/plugins/security_solution/cypress/integration/cases/attach_timeline.spec.ts

@@ -21,12 +21,10 @@ import { createCase } from '../../tasks/api_calls/cases';
 
 describe('attach timeline to case', () => {
   context('without cases created', () => {
-    beforeEach((done) => {
+    beforeEach(() => {
       cleanKibana();
-
       createTimeline(timeline).then((response) => {
         cy.wrap(response.body.data.persistTimeline.timeline).as('myTimeline');
-        done();
       });
     });