Replace jasmine.createSpy() with jest.fn()

spec/frontend/error_tracking/components/error_tracking_list_spec.js

@@ -31,7 +31,7 @@ describe('ErrorTrackingList', () => {
     actions = {
       getErrorList: () => {},
       startPolling: () => {},
-      restartPolling: jasmine.createSpy('restartPolling'),
+      restartPolling: jest.fn().mockName('restartPolling'),
     };
 
     const state = {

spec/frontend/ide/lib/common/disposable_spec.js

@@ -8,7 +8,7 @@ describe('Multi-file editor library disposable class', () => {
     instance = new Disposable();
 
     disposableClass = {
-      dispose: jasmine.createSpy('dispose'),
+      dispose: jest.fn().mockName('dispose'),
     };
   });
 

spec/frontend/pages/profiles/show/emoji_menu_spec.js

@@ -13,7 +13,7 @@ describe('EmojiMenu', () => {
   let dummyEmojiList;
 
   beforeEach(() => {
-    dummySelectEmojiCallback = jasmine.createSpy('dummySelectEmojiCallback');
+    dummySelectEmojiCallback = jest.fn().mockName('dummySelectEmojiCallback');
     dummyEmojiList = {
       glEmojiTag() {
         return dummyEmojiTag;