Disposition of xserver-xorg-hwe-18.04 in system upgraded to 20.04

Solution 1:

The packages.ubuntu.com says that this xserver-xorg-hwe-18.04 package is transitional on Ubuntu 20.04 LTS and that it has size of 9 Kb.

So it may be safely removed by

sudo apt-get purge --autoremove xserver-xorg-hwe-18.04

This package was needed on 18.04 LTS to get newer components of HWE stack.

About the xserver-xorg-hwe-20.04 package you are right - it does not exist.