feat: upgrade WebdriverIO to v9, drop JWP capabilities

Author: web-padawan

docs/docs/test-runner/browser-launchers/saucelabs.md

@@ -68,12 +68,6 @@ export default {
       browserVersion: '11.0',
       platformName: 'Windows 7',
     }),
-
-    sauceLabsLauncher({
-      browserName: 'iphone',
-      platform: 'iPhone X Simulator',
-      version: '13.0',
-    }),
   ],
 };
 ```
@@ -141,24 +135,3 @@ export default {
   ],
 };
 ```
-
-### JWP Capabilities
-
-W3C webdriver capabilities are not yet fully implemented for Sauce Labs simulators. If you need to run the tests on iPhone Simulator, you need to use JWP capabilities.
-
-The following steps are required to use JWP capabilities with Sauce Labs launcher:
-
-- Use `version` instead of `browserVersion`,
-- Do not set a `sauce:options` property.
-
-```js
-export default {
-  browsers: [
-    sauceLabsLauncher({
-      browserName: 'iphone',
-      platform: 'iPhone X Simulator',
-      version: '13.0',
-    }),
-  ],
-};
-```