[2124565] Deleted DataSource reappears in list

Description of problem: When DataSource is deleted, it immediately reappears in DS list with new creation date and it looks like it was just re-created immediately after deletion.

Version-Release number of selected component (if applicable):

How reproducible: always

Steps to Reproduce:
1. Open DataSources page
2. Create a DataSource, find it in DS list
3. Click kebab button and delete new DataSource

Actual results: The DS is re-created

Expected results: The DS is deleted

Additional info: Second deletion attempt is always successful