Anki add-on: Pass/Fail 2: Remove the "Good" and "Hard" buttons

Modification of the original addon "Pass/Fail 2: Remove the "Easy" and "Hard" buttons": https://ankiweb.net/shared/info/876946123 All credits for the addon must go to the original creator. I just removed the "hard" and "good" buttons, instead of "difficult and "easy". I understand very little about modifying addons, I did it with AI, so I won't make corrections and updates in the future.