IE driver doesn't support the "Close" command

[JoshuaKGoldberg]

This is the nature of IE - it never dies...

 FAIL  test/end-to-end/dev/Tests/MyTests.test.ts
  ● Test suite failed to run

    UnsupportedOperationError: close: Error 404: Not Found
    Not Found

      at parseHttpResponse (node_modules/selenium-webdriver/lib/http.js:557:11)
      at Executor.execute (node_modules/selenium-webdriver/lib/http.js:468:26)

Test Suites: 1 failed, 1 total
Tests:       0 total
Snapshots:   0 total
Time:        40.098s
Ran all test suites matching /MyTests/i.

(error message enhanced with changes from SeleniumHQ/selenium#6321)

...however, it does support .quit().