Adjust flushing migration to delete all mandates

and not only the ones coming from Loket. There is a risk that we delete
too much data here but if that would be the case, the data is
recuperable through the backups by looking at persons and worship
positions that were in OP but not in the worship services landing zone.

config/migrations/2025/20250116085000-sync-from-loket-consumers-bump/20250116085400-contact-points.sparql

@@ -7,13 +7,6 @@ DELETE {
   GRAPH <http://mu.semte.ch/graphs/worship-service> { 
     ?agent a <http://data.lblod.info/vocabularies/contacthub/AgentInPositie> .
 
-    # Ensure the agent comes from Loket initially and will be re-synced
-    FILTER EXISTS {
-      GRAPH <http://mu.semte.ch/graphs/landing-zone/worship-services-sensitive> {
-        ?agent a <http://data.lblod.info/vocabularies/contacthub/AgentInPositie> .
-      }
-    }
-
     OPTIONAL {
       ?agent <http://schema.org/contactPoint> ?contactPoint .
 

config/migrations/2025/20250116085000-sync-from-loket-consumers-bump/20250116085600-remove-agents-in-position.sparql

@@ -6,12 +6,5 @@ DELETE {
   GRAPH <http://mu.semte.ch/graphs/worship-service> { 
     ?agent a <http://data.lblod.info/vocabularies/contacthub/AgentInPositie> ;
       ?pagent ?oagent .
-
-    # Ensure the agent comes from Loket initially and will be re-synced
-    FILTER EXISTS {
-      GRAPH <http://mu.semte.ch/graphs/landing-zone/worship-services-sensitive> {
-        ?agent a <http://data.lblod.info/vocabularies/contacthub/AgentInPositie> .
-      }
-    }
   }
 }