You can delete the report type, if required. Click on Reports link available in the left sidebar. The sub-links appear as below.
Click on Report Types link. The list of all report types appears.
Locate the target report type.
In Action column, click on its View button. The report type row expands to show the report details.
Note: You can delete a report type only if no Active report is submitted using this report type.
Click on Delete button to delete this report type. The backend system asks you confirm if you want to delete this report type. Click on Yes to confirm it.