Telemetry to Mozi11a during uninstall

[davidye-git]

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• [x] I have read the Contributing Guidelines for this project.
• [x] I have searched the issue tracker for an issue that matches the one I want to file, without success.

Component The Dot browser uninstaller on Windows

Describe the bug Uninstaller sends unwanted telemetry to Mozi11a during the uninstall (doesn't that sound great for a "privacy" browser such as Dot?)

To Reproduce Steps to reproduce the behavior:

1. Install mitmproxy to see the requests that the uninstaller makes and follow the instructions here on how to set up mitmproxy.
2. Have mitmproxy open in a web browser other than Dot
3. Go to Control Panel > Programs and Features
4. Right click on Dot and click "Uninstall"
5. Go through the uninstall process
6. After the uninstall is done you should see a request to https://incoming.telemetry.mozilla.org in the flows

Expected behavior The uninstaller (or the web browser itself) should not make telemetry requests such as https://incoming.telemetry.mozilla.org or any unwanted requests at all. Just uninstall

Screenshots

System Information (please complete the following information):

• OS: Windows 10
• Version: 20H2 (OS Build 19042.1081)

Dot Browser Information (please complete the following information):

• Version: 87.0