Remove useless error checks

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

pkg/iam/organization_service.go

@@ -1624,7 +1624,7 @@ func (s OrganizationService) DeleteSCIMConfiguration(
 						connector := &coredata.Connector{ID: *bridge.ConnectorID}
 
 						err = connector.Delete(ctx, tx, scope)
-						if err != nil && err != coredata.ErrResourceNotFound {
+						if err != nil {
 							return fmt.Errorf("cannot delete connector: %w", err)
 						}
 					}

pkg/mailman/service.go

@@ -269,10 +269,6 @@ func (s *Service) UnsubscribeByEmail(
 			wasConfirmed := subscriber.Status == coredata.MailingListSubscriberStatusConfirmed
 
 			if err := subscriber.Delete(ctx, tx, scope); err != nil {
-				if errors.Is(err, coredata.ErrResourceNotFound) {
-					return ErrSubscriberNotFound
-				}
-
 				return fmt.Errorf("cannot delete mailing list subscriber: %w", err)
 			}
 
@@ -348,10 +344,6 @@ func (s *Service) DeleteSubscriber(
 			wasConfirmed := subscriber.Status == coredata.MailingListSubscriberStatusConfirmed
 
 			if err := subscriber.Delete(ctx, tx, scope); err != nil {
-				if errors.Is(err, coredata.ErrResourceNotFound) {
-					return ErrSubscriberNotFound
-				}
-
 				return fmt.Errorf("cannot delete mailing list subscriber: %w", err)
 			}
 
@@ -606,10 +598,6 @@ func (s *Service) DeleteMailingListUpdate(
 		func(ctx context.Context, tx pg.Tx) error {
 			mlu := coredata.MailingListUpdate{ID: id}
 			if err := mlu.Delete(ctx, tx, scope); err != nil {
-				if errors.Is(err, coredata.ErrResourceNotFound) {
-					return ErrMailingListUpdateNotFound
-				}
-
 				return fmt.Errorf("cannot delete mailing list update: %w", err)
 			}