FN-5923: remove duplicate merger fixture key

Remove the duplicate merger override from the SettingsModal test fixture.

- delete the earlier legacy merger object from the mocked settings payload
- keep the deterministic merger override as the single effective fixture value

Files changed:
 packages/dashboard/app/components/__tests__/SettingsModal.test.tsx | 1 -
 1 file changed, 1 deletion(-)

Fusion-Task-Id: FN-5923

Fusion-Task-Lineage: 206239b0-af4a-4e45-93b8-2940a42d431a

packages/dashboard/app/components/__tests__/SettingsModal.test.tsx

@@ -469,7 +469,6 @@ describe("SettingsModal", () => {
     mockFetchProjects.mockResolvedValueOnce([{ id: "p-1", name: "Alpha" }]);
     mockFetchSettings.mockResolvedValueOnce({
       ...defaultSettings,
-      merger: { mode: "legacy" },
       mergeIntegrationWorktree: "cwd-main",
       merger: { mode: "deterministic" },
     });