Remove pantheon-agent-geoclue2, not anymore maintained by upstream (since 2023-05-09)

--- data/geoclue.conf.in.orig	2023-09-03 08:27:30 UTC
+++ data/geoclue.conf.in
@@ -10,7 +10,7 @@
 
 # Whitelist of desktop IDs (without .desktop part) of all agents we recognise,
 # separated by a ';'.
-whitelist=@demo_agent@gnome-shell;io.elementary.desktop.agent-geoclue2;sm.puri.Phosh;lipstick
+whitelist=@demo_agent@gnome-shell;sm.puri.Phosh;lipstick
 
 # Network NMEA source configuration options
 [network-nmea]
@@ -138,11 +138,6 @@ system=true
 users=
 
 [org.gnome.Shell]
-allowed=true
-system=true
-users=
-
-[io.elementary.desktop.agent-geoclue2]
 allowed=true
 system=true
 users=