It seem this did the job: apt-get purge grub-common (it will include configurations files which remove will not).

And to remove unused dependencies (at least in my case):
apt-get purge libfreetype6 libfuse2 libpng16-16 mokutil shim-helpers-amd64-signed shim-signed-common shim-unsigned

System booted without problems.
Hope the nest upgrade will run without problems.

It seem this did the job: apt-get purge grub-common (it will include configurations files which remove will not).

And to remove unused dependencies (at least in my case):
apt-get purge libfreetype6 libfuse2 libpng16-16 mokutil shim-helpers-amd64-signed shim-signed-common shim-unsigned

System booted without problems.
Hope the next upgrade will run without problems.