fix transaction switch in delete

Co-authored-by: Raphael Guzman <[email protected]>

Author: dimitri-yatsenko

datajoint/table.py

@@ -413,7 +413,8 @@ def delete(self, transaction=True, safemode=None):
                 if safemode:
                     print('Deletes committed.')
             else:
-                self.connection.cancel_transaction()
+                if transaction:
+                    self.connection.cancel_transaction()
                 if safemode:
                     print('Deletes cancelled')