clean up of unmapped objects no longer an option but enforced as...

clean up of unmapped objects no longer an option but enforced as external_db_id also added to the delete line to ensure safety

misc-scripts/xref_mapping/xref_mapper.pl

@@ -386,6 +386,8 @@ if($upload){
   print "\nChecking pair data\n";
   $mapper->add_missing_pairs();
 
+  print "\nPriority unmapped xrefs sorting\n";
+  $mapper->unmapped_data_for_prioritys();
 
   print "\nChecking xrefs\n";
   $mapper->cleanup_database();