adjust testcode

src/test/models/shareLink.test.js

@@ -23,9 +23,6 @@ describe('ShareLink', () => {
     };
 
     const res = {
-      found: jest.fn().mockReturnValue('layout-growi/shared_page'),
-      expired: jest.fn().mockReturnValue('layout-growi/not_found_shared_page'),
-      notFound: jest.fn().mockReturnValue('layout-growi/expired_shared_page'),
       render: (page) => { return page },
     };