...
To delete a test case you will need Permission to Delete Issues. Click on the QAlity Test issue menu […] and select Delete.
To delete a test case you will need permission to delete issues. To do that, click the three-dot menu in the QAlity Test issue and then click Delete.
...
...
To delete a test step click on the bin icon at the end of the test step, this . This will remove all test step data.
...