If you don’t want to hide an Event Tag, you have the option of permanently deleting that tag. You may want to delete tags that you no longer use or in order to free up Event Tag space if you have used all of the Event Tags allotted to your account. You can delete Event Tags from your account by using the pop-up “Tags & Overlays” management dialog.
When you delete an Event Tag, that tag will be removed from your Event Tag list as well as from any event that the tag was applied to. Deleting an Event Tag will not delete your Event.
Note: Be sure that you want to delete your Event Tag before you do it. There is no way to undo this action and this will delete the tag from all of your calendars and other apps in your account. If you want to remove an Event Tag from one calendar we suggest hiding it instead.