ref(settings): Remove unreachable mutation.isSuccess disable

The success modal blocks interaction and closing it navigates away,
so the button can never be clicked after success. Remove the dead
code and its test.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: priscilawebdev

static/app/views/settings/account/apiNewToken.spec.tsx

@@ -170,28 +170,6 @@ describe('ApiNewToken', () => {
     );
   });
 
-  it('disables create button after successful creation', async () => {
-    MockApiClient.clearMockResponses();
-    MockApiClient.addMockResponse({
-      method: 'POST',
-      url: '/api-tokens/',
-      body: ApiTokenFixture({token: 'sntrys_test_token_123'}),
-    });
-
-    render(<ApiNewToken />);
-    renderGlobalModal();
-
-    await selectEvent.select(screen.getByRole('textbox', {name: 'Project'}), 'Read');
-
-    const createButton = screen.getByRole('button', {name: 'Create Token'});
-    expect(createButton).toBeEnabled();
-
-    await userEvent.click(createButton);
-
-    expect(await screen.findByLabelText('Generated token')).toBeInTheDocument();
-    expect(createButton).toBeDisabled();
-  });
-
   it('displays permissions preview when scopes are selected', async () => {
     render(<ApiNewToken />);
 

static/app/views/settings/account/apiNewToken.tsx

@@ -167,7 +167,7 @@ export default function ApiNewToken() {
           </Panel>
           <Flex justify="end" gap="md" padding="md">
             <Button onClick={handleGoBack}>{t('Cancel')}</Button>
-            <form.SubmitButton disabled={mutation.isSuccess || allPermissionsNoAccess}>
+            <form.SubmitButton disabled={allPermissionsNoAccess}>
               {t('Create Token')}
             </form.SubmitButton>
           </Flex>