The application you are showing in your screenshot is for
software-properties-qt. This is a qt interface of software properties for the KDE desktop. It is not installed by default, as opposed to the gtk-version,
software-properties-gtk. It is not that one that is providing your "Additional Drivers" icon in the menu.
The "Additional Drivers" menu item actually opens a specific tab of the "Software & Updates" application (
software-properties-gtk). You can only remove that tab by removing the entire application. Doing so will remove all functionality of that app, i.e., a graphical tool to interact with your software sources, change update settings etc. It will also remove the Gnome software center (although not the Snap Store in Ubuntu 20.04). It will remove the automatic graphical updater. Accordingly, although you can remove it, you could only continue to manage your software through the terminal if you remove software-properties-gtk.
You may be fine by just removing the "Additional drivers" menu item.
Removing "Additional drivers" from your application menu
~/.local/share/applications. Open the local copy in your text editor and a line
Hidden=true. This will remove the icon for "Additional drivers" from your user menu/application overview.