How to remove avr-libc from Debian Unstable (Sid)

Uninstall avr-libc

To remove just avr-libc package itself from Debian Unstable (Sid) execute on terminal:

sudo apt-get remove avr-libc

To remove the avr-libc package and any other dependant package which are no longer needed from Debian Sid.

sudo apt-get remove --auto-remove avr-libc

If you also want to delete configuration and/or data files of avr-libc from Debian Sid then this will work:

sudo apt-get purge avr-libc

To delete configuration and/or data files of avr-libc and it's dependencies from Debian Sid then execute:

sudo apt-get purge --auto-remove avr-libc