data: Drop old bugzilla references in .desktop files

They are obsolete, and I don't think we have a gitlab replacement
(plus the fields probably stopped being relevant when bug-buddy
went out of fashion ages ago).

https://gitlab.gnome.org/GNOME/gnome-shell/merge_requests/920

data/gnome-shell-extension-prefs.desktop.in.in

@@ -3,10 +3,6 @@ Type=Application
 Name=Shell Extensions
 Comment=Configure GNOME Shell Extensions
 Exec=@bindir@/gnome-shell-extension-prefs %u
-X-GNOME-Bugzilla-Bugzilla=GNOME
-X-GNOME-Bugzilla-Product=gnome-shell
-X-GNOME-Bugzilla-Component=extensions
-X-GNOME-Bugzilla-Version=@VERSION@
 Categories=GNOME;GTK;
 OnlyShowIn=GNOME;
 NoDisplay=true

data/meson.build

@@ -13,7 +13,6 @@ desktopconf = configuration_data()
 # We substitute in bindir so it works as an autostart
 # file when built in a non-system prefix
 desktopconf.set('bindir', bindir)
-desktopconf.set('VERSION', meson.project_version())
 desktopconf.set('systemd_hidden', have_systemd ? 'true' : 'false')
 
 foreach desktop_file : desktop_files

data/org.gnome.Shell.desktop.in.in

@@ -3,10 +3,6 @@ Type=Application
 Name=GNOME Shell
 Comment=Window management and application launching
 Exec=@bindir@/gnome-shell
-X-GNOME-Bugzilla-Bugzilla=GNOME
-X-GNOME-Bugzilla-Product=gnome-shell
-X-GNOME-Bugzilla-Component=general
-X-GNOME-Bugzilla-Version=@VERSION@
 Categories=GNOME;GTK;Core;
 OnlyShowIn=GNOME;
 NoDisplay=true