Removes the stupid "Youtube Big Mode" update.
Removes the new "YouTube Big Mode" update which makes every player UI Element huge whenever the user enters "Big Mode" (full-width player).
Q: Why is this called "Sensible Mode"?
A: Because YouTube calls the update/class "big-mode" and since I find it lacks common sense, I called mine "sensible-mode"
GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 - https://spdx.org/licenses/GPL-3.0-only.html
