Drop libproxy1-plugin-gsettings as its gone from Forky / Sid and replaced with libproxy1v5

Author: igorpecovnik

config/desktop/trixie/environments/xfce/config_base/packages

@@ -48,7 +48,6 @@ libgsettings-qt1
 libgtk2.0-bin
 libnotify-bin
 libpam-gnome-keyring
-libproxy1-plugin-gsettings
 libwmf-0.2-7-gtk
 libxcursor1
 lightdm