To delete a document from an agenda item:
Go to the agenda item where the document is located
Click on the context menu (3 dots) located at the end of the document
Select Delete (a confirmation box will open)
Things to Note if the board pack has been published:
When the box opens if there have been any previous versions or if anyone has made annotations on the document there will be a notice that those will also be removed.
You may wish instead to add an updated version of the document to the published board pack rather than deleting an older version as that will allow annotations to carry through on the newer version. For more information please see Adding late documents