Description of problem:

Can't remove Jira connection after it was added to Wave even after Wave was removed 

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

 6.2.0-24

How reproducible:

100%

Steps to Reproduce:
1. Create Jira configuration
2. Create new wave and add that configuration to it
3. Remove wave
4. Remove Jira configuration

Actual results:

Jira connection remains locked and can't be removed

Expected results:

Jira connection should be removed 

Additional info: