e2e: Don't close browser window in afterEach
e2e: Don't close browser window in afterEach

While experimenting with new end-to-end test cases, I realized that
calling `driver.close()` would actually end the Chrome session.

mbland/custom-links,mbland/custom-links,mbland/url-pointers,mbland/url-pointers,mbland/url-pointers,mbland/custom-links