Comment 9 for bug 1765662

Actually, I just checked all and removed them in one go.

$ remove-package -m "Obsolete; LP: #1765662" x11proto-dri3 x11proto-fixes x11proto-fonts x11proto-gl x11proto-input x11proto-kb x11proto-present x11proto-randr x11proto-record x11proto-render x11proto-resource x11proto-scrnsaver x11proto-video x11proto-xcmisc x11proto-xext x11proto-xf86bigfont x11proto-xf86dga x11proto-xf86dri x11proto-xf86vidmode x11proto-xinerama
Removing packages from bionic:
 x11proto-dri3 1.0-1 in bionic
 x11proto-fixes 1:5.0-2ubuntu2 in bionic
 x11proto-fonts 2.1.3-1 in bionic
 x11proto-gl 1.4.17-1 in bionic
 x11proto-input 2.3.2-1 in bionic
 x11proto-kb 1.0.7-1 in bionic
 x11proto-present 1.1-1 in bionic
 x11proto-randr 1.5.0-1 in bionic
 x11proto-record 1.14.2-1 in bionic
 x11proto-render 2:0.11.1-2 in bionic
 x11proto-resource 1.2.0-3 in bionic
 x11proto-scrnsaver 1.2.2-1 in bionic
 x11proto-video 2.3.3-1 in bionic
 x11proto-xcmisc 1.2.2-1 in bionic
 x11proto-xext 7.3.0-1 in bionic
 x11proto-xf86bigfont 1.2.0-3 in bionic
 x11proto-xf86dga 2.1-4 in bionic
 x11proto-xf86dri 2.1.1-2 in bionic
 x11proto-xf86vidmode 2.3.1-2 in bionic
 x11proto-xinerama 1.2.1-2 in bionic
Comment: Obsolete; LP: #1765662
Remove [y|N]? y
20 packages successfully removed.