[9.0] [Spaces] Deleted obsolete test for session expiration toast (#237876) (#238132)

# Backport

This will backport the following commits from `main` to `9.0`:
- [[Spaces] Deleted obsolete test for session expiration toast
(#237876)](#237876)

<!--- Backport version: 9.6.6 -->

### Questions ?
Please refer to the [Backport tool
documentation](https://github.com/sorenlouv/backport)

<!--BACKPORT [{"author":{"name":"Elena
Shostak","email":"165678770+elena-shostak@users.noreply.github.com"},"sourceCommit":{"committedDate":"2025-10-07T18:20:07Z","message":"[Spaces]
Deleted obsolete test for session expiration toast (#237876)\n\n##
Summary\n\nIn scope of #235957
session\ntimeout toast with `Extend` button has been moved to a modal.
Deleted\nobsolete test that is no longer valid.\n\n\n### Checklist\n\n-
[x] The PR description includes the appropriate Release Notes
section,\nand the correct `release_note:*` label is applied per
the\n[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)\n-
[x] Review the
[backport\nguidelines](https://docs.google.com/document/d/1VyN5k91e5OVumlc0Gb9RPa3h1ewuPE705nRtioPiTvY/edit?usp=sharing)\nand
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Deleted obsolete test for session expiration
toast","number":237876,"url":"https://github.com/elastic/kibana/pull/237876","mergeCommit":{"message":"[Spaces]
Deleted obsolete test for session expiration toast (#237876)\n\n##
Summary\n\nIn scope of #235957
session\ntimeout toast with `Extend` button has been moved to a modal.
Deleted\nobsolete test that is no longer valid.\n\n\n### Checklist\n\n-
[x] The PR description includes the appropriate Release Notes
section,\nand the correct `release_note:*` label is applied per
the\n[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)\n-
[x] Review the
[backport\nguidelines](https://docs.google.com/document/d/1VyN5k91e5OVumlc0Gb9RPa3h1ewuPE705nRtioPiTvY/edit?usp=sharing)\nand
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Deleted obsolete test for session expiration toast (#237876)\n\n##
Summary\n\nIn scope of #235957
session\ntimeout toast with `Extend` button has been moved to a modal.
Deleted\nobsolete test that is no longer valid.\n\n\n### Checklist\n\n-
[x] The PR description includes the appropriate Release Notes
section,\nand the correct `release_note:*` label is applied per
the\n[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)\n-
[x] Review the
[backport\nguidelines](https://docs.google.com/document/d/1VyN5k91e5OVumlc0Gb9RPa3h1ewuPE705nRtioPiTvY/edit?usp=sharing)\nand
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BACKPORT-->

Co-authored-by: Elena Shostak <165678770+elena-shostak@users.noreply.github.com>

Author: kibanamachine

x-pack/platform/plugins/shared/security/public/session/session_expiration_toast.test.tsx

@@ -68,19 +68,4 @@ describe('SessionExpirationToast', () => {
     );
     getByText(/You will be logged out in [0-9]+ seconds/);
   });
-
-  it('does not render extend button if session cannot be extended', () => {
-    const sessionState$ = of<SessionState>({
-      lastExtensionTime: Date.now(),
-      expiresInMs: 60 * 1000,
-      canBeExtended: false,
-    });
-
-    const { queryByRole } = render(
-      <I18nProvider>
-        <SessionExpirationToast sessionState$={sessionState$} />
-      </I18nProvider>
-    );
-    expect(queryByRole('button', { name: 'Stay logged in' })).toBeNull();
-  });
 });