Remove percy and add docs on how to produce the snapshots

packages/playground/src/tests/setting-static-props/test.e2e.ts

@@ -1,5 +1,4 @@
 import {test, expect} from '@playwright/test'
-import percySnapshot from '@percy/playwright'
 
 const isMac = process.platform === 'darwin'
 
@@ -43,8 +42,6 @@ test.describe('setting-static-props', () => {
     await expect(firstInput).toHaveAttribute('value', '1')
     await expect(secondInput).toHaveAttribute('value', '2')
 
-    // Our first visual regression test
-    // @ts-ignore - probably percy uses a different version of playwright
-    await percySnapshot(page, test.info().titlePath.join('/') + '/After redo')
+    await expect(page).toHaveScreenshot()
   })
 })