Hello. Somehow, my emacs system (version 26.3) is installed under `/usr` of git bash for windows, e.g., `/usr/bin/emacs.exe`, `/usr/share/emacs`, etc. Of course, `/usr` is actually located at `C:\Program Files\Git\usr`. Now, I want to update the emacs to version 27.2, but before doing so, I also want to uninstall the older emacs version 26.3. I am not really sure how to uninstall it. Unfortunately, I do not recall how I installed it under `/usr` area in the first place instead of typical `C:\Program Files\Emacs\` area. Thanks for your help!