We currently have a legacy and a new experience with the Schedules feature.
This article covers the new Schedules experience. Please ensure you're in the new experience by using the toggle on the upper-left of the Schedules page.
If you have "Schedules: Manage" permission, you can edit all schedules in your organization.
Delete a schedule
Select Schedules in the sidebar or select it in More.
Click Manage scheduleson the top of the page.
You can choose how you want to view your schedules by selecting between Table and List on the upper-right of the page.
Click the schedule.
Click on the upper-right corner of the side panel.
Select Delete schedule.

In the pop-up window, click Delete.
Deleting a schedule also deletes all associated activity, including its completion progress. Inspections completed from the schedule won’t be affected.