I installed Flatpak from this guide: https://flatpak.org/setup/Ubuntu/ and I want to remove it now but this icon
doesn't go and I can't remove it. Also, I can open that application. It's same with Ubuntu Software.
I tried these commands to remove flatpak:
flatpak uninstall --unused
sudo apt-get remove --autoremove flatpak
sudo apt-get purge flatpak
I restart my computer, I tried this commands to remove that application:
sudo apt-get remove gnome-software-plugin-flatpak
It said "gnome-software-plugin-flatpak" was not installed.
I also checked repositories and didn't see anything. I am using Ubuntu 20.04 LTS.