Update 1: Remove an unused preference key

This is a quick fix to #43. I am not sure if it's the real fix, so it will stay as a pre-release for a while.

If you have encountered this issue and find that the update fixes it, please give this release an emoji. If it's still not working, please reply to issue #43

Big thanks to @timwredwards and @cr2s367067 for helping me locate the bug.

Good night everyone.