CCM-8590: fix copyTemplate unit test

Author: alexnuttall

frontend/src/__tests__/components/forms/CopyTemplate/CopyTemplate.test.tsx

@@ -39,7 +39,6 @@ describe('Choose template page', () => {
       screen.getByTestId('EMAIL-radio'),
       screen.getByTestId('NHS_APP-radio'),
       screen.getByTestId('SMS-radio'),
-      screen.getByTestId('LETTER-radio'),
     ];
     const submitButton = screen.getByTestId('submit-button');