Drop RowsAffected check from Delete methods

Deletes are idempotent — zero affected rows is not an error.

Signed-off-by: Émile Ré <emile@probo.com>

pkg/coredata/common_third_party.go

@@ -429,15 +429,11 @@ func (t CommonThirdParty) Delete(
 
 	args := pgx.StrictNamedArgs{"id": id}
 
-	result, err := conn.Exec(ctx, q, args)
+	_, err := conn.Exec(ctx, q, args)
 	if err != nil {
 		return fmt.Errorf("cannot delete common third party: %w", err)
 	}
 
-	if result.RowsAffected() == 0 {
-		return ErrResourceNotFound
-	}
-
 	return nil
 }