In the desktop view:

1. Select the desired document and then select .
2. From the Versions tab in the right panel, select the document version you wish to delete.
3. Select and then select Move to Trash.

If your administrator has enabled restore, you might be able to restore an item from the Trash.

In the mobile view:

1. Highlight a document in the list.
2. Select the kebab menu and then select Versions.
3. Select  and then select Move to Trash.