You can remove annotation fields from selected items in one of two ways. You can either use a menu command or you can delete the item directly in the panel.
To remove annotations in a view
Display a view by clicking the List, Thumbnail, or Media tab.
Select the media item or items you want to remove annotations from.
On the Action menu, click Clear Annotations.
In the dialog box, you can click the Clear All button to remove all annotations from the selected media item or items, or click the Choose Fields button to choose specific annotations to remove. The latter reveals a list of annotations associated with all items, which enables you to select the fields to remove.
To remove annotations in the Info panel
To remove an annotation, select the annotation and press Delete. You must then change focus to another media item, or click the check mark icon on the toolbar to save your changes to your catalog.