To delete Review Template tags, all it takes is some simple steps:
Step 1: Navigate into the Admin panel, and click on "Reviews" on the left panel
Step 2: Click on "Templates"
Step 3: On the top right, click "Manage tags"
Step 4: To the right of the tag you would like to delete, click on the ellipsis
Step 5: From the dropdown, click "Delete"
Step 6: Confirm by pressing "Remove"
Please note: When deleting a tag, it will be removed from any templates it is associated with.