You can delete requirements from the requirements list. Select the requirements you want to delete by checking the checkboxes for the corresponding lines. Then click the Delete function button at the bottom of the list screen and confirm the deletion.
You can also delete requirements in the overview screen of a Test cycle. Select in the tree the requirement you want to remove and click in the right frame on the Delete function button. Then confirm the removal of the requirement in the pop-up that appears.
If test cases and/or defects are attached to a requirement, they are disconnected when the requirement is removed.