The majority of the Windows clean up said the same steps everytime. They
didn't really say anything really other than remove Keyman and
sometimes the 3rd-party app to do the test. I have added a general
comment to the start of all the tests to cover this.
Similar changes to developer.md and mac.md
The gestures.md had clean up that was actually the Keyman for Windows
Cleanup for tests these have been removed.
Note: android and ios and web possilby all need changes but they do
seem to vary more.
Build-bot: skip
