Description of problem:

At host level before editing text in "ansible variable" delete option does not appear. But after editing text delete option does appear and when we try to delete any variable confirm button does not work.

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

6.15

How reproducible:

always

Steps to Reproduce:
1. Configure -> Ansible -> import ansible role
2. Configure -> Ansible -> variable -> New Ansible Variable
3. Make variable overridable
4. Set default Parameter Type to "array"
5. Set the Default Value to ["Default Text"]
6. Hosts -> All Hosts -> Select Host
7. Ansible -> Roles -> Assign the role to a host
8. Variables -> Override that value
9. Click on delete and confirm button

Actual results:

After overriding value delete option will appear and when click on delete, "confirm" button does not work.

Expected results:

Variable should be deleted

Additional info:

After editing value if delete button is appearing it should delete the variable else that option should not be appear.