Function removeItem

src/browser/stores/WorkspaceStore.test.ts:139–141

(key: string)

    return Array.from(localStorageBacking.keys())[index] ?? null;
  },
  removeItem(key: string) {
    localStorageBacking.delete(key);
  },
  setItem(key: string, value: string) {
    localStorageBacking.set(key, value);
  },