New
#1
Hello,
You can check to see if it may show up using option three below to remove.
Add or Remove Keyboard Layouts in Windows 10
You can export both the Substitutes (step 6) and Preload key (step 7) to a REG file first to serve as a backup to be safe.
Export and Import Registry Keys in Windows
This way, if "00000809" is not the correct one for the language you wanted to remove, you could just merge the REG files to undo.