build.gnome.org: Remove some unused DOM nodes
build.gnome.org: Remove some unused DOM nodes

vrutkovs/vrutkovs.github.io,GNOME/gnome-ostree,vrutkovs/vrutkovs.github.io,chergert/gnome-continuous,vrutkovs/vrutkovs.github.io,chergert/gnome-continuous,chergert/gnome-continuous,GNOME/gnome-ostree,GNOME/gnome-ostree