After already creating a OneDrive share. You may want or need to remove all access to the share after a point in time, or to remove certain people from having access. The steps are very similar to how the share was created.
- First open the OneDrive folder (click the OneDrive icon in the system tray and select "Open folder")
 - Right click on the file/folder you want to make share changes to and click "Share"
 - Next click the ellipsis (3 dots) to the right of the file/folder name and then choose "manage access"
 - Click the ellipsis on the next screen, and then you will see an "X" to remove a link entirely for whoever is listed beside it.  Or if there is a list of people, expand the list and click the X beside the user you would like removed from the list
 - Click Save to save the changes.