use $HOME variable (always available) instead /home/pi

[theofficialgman]

fix automatic updating and removal for users not pi (like on non-retropie images)

[theofficialgman]

@thebezelproject could you consider merging this soon? this is not broken on raspberrypiOS as well since users will no longer be called pi by default. users will now make their own username in a first time setup script

[theofficialgman]

@thebezelproject please merge the bezelproject is broken because of these issues

[theofficialgman]

@thebezelproject bump. please merge as your project is broken currently

[theofficialgman]

@thebezelproject please merge

[theofficialgman]

bump