remove unused import

packages/obsidian-testing-framework/src/index.ts

@@ -1,7 +1,6 @@
 import { test as base } from "@playwright/test";
 import { _electron as electron } from "playwright";
 import { Fixtures } from "@playwright/test";
-import { execSync } from "child_process";
 import path from "path";
 import { extractAll } from "asar";
 import { ObsidianTestFixtures } from "./fixtures.js";