How to Delete a WordPress Theme
In this article, we will show you how to delete a theme that is not being used.
Please note, in order to do this, the theme cannot be actively in use.
1) Login to the Dashboard
2) Click the Appearances link from the left menu
3) Locate the theme you wish to delete, then click the Delete link.
4) When prompted, click OK to confirm that you wish to delete the theme.