polkit-parsing: use 'gdbus wait' instead of mc-wait-for-name

This removes a dependency on telepathy-mission-control-5
which is no longer available in Apertis v2024

Signed-off-by: Dylan Aïssi <dylan.aissi@collabora.com>

common/polkit-parsing.sh

@@ -34,10 +34,8 @@ fi
 ( set +e; sudo ${polkitd} --replace 2>&1 ) | sed 's/^/# /' | tee $TMPFILE &
 
 # Wait for it to start.
-# FIXME: This should be replaced with something non-Telepathy-specific later.
-# Like upstreaming mc-wait-for-name to gdbus.
-DBUS_SESSION_BUS_ADDRESS=unix:path=/var/run/dbus/system_bus_socket \
-	mc-wait-for-name org.freedesktop.PolicyKit1
+gdbus wait --address unix:path=/var/run/dbus/system_bus_socket \
+        org.freedesktop.PolicyKit1
 
 # Query for actions, which forces polkit to parse all the policy files and
 # output warnings if any are malformed.