added deleting flagging collections with duplicate relatedflag

cleanflaglist.script

@@ -70,6 +70,26 @@ foreach ($fcfd_result as $fc) {
 }
 $this->output()->writeln($fc_missing_relatedflag .' flagging_collection with missing related_flag');
 
+// searching for duplicates relatedflags
+$this->output()->writeln("");
+$this->output()->writeln("Duplicate relatedflag flagging_collection cleaning");
+$fcfd_query = $database->select('flagging_collection_field_data', 'fcfd')
+  ->fields('fcfd', ['id', 'relatedflag'])
+  ->groupBy('fcfd.relatedflag')
+  ->having('COUNT(*) > 1');
+$fcfd_query->addExpression('COUNT(*)', 'count');
+
+// $results = $query->execute()->fetchAll();
+
+$fcfd_result = $fcfd_query->execute();
+$this->output()->writeln($fcfd_query->countQuery()->execute()->fetchField() . " duplicate related flags");
+
+foreach ($fcfd_result as $dup){
+  $this->output()->writeln($dup->relatedflag . " of " . $dup->id . " is dup");
+  delete_flagingcollection($dup, $database, $delete);
+}
+
+// MAIN DELETE FUNCTION
 function delete_flagingcollection($fc, $database, $delete){
   if($delete){
     // $this is not working in function