Removing plug-in completes successfully but icons remain

Description
Removing vCenter Plug-in package files completed successfully, but plug-in icons are still visible in the vSphere Web Client.
Corrective action

Log out of the vSphere Web Client and log in again. Closing and re-opening your browser might be required. If logging out of vSphere Web Client does not resolve the issue, it might be necessary to reboot the vCenter server web services. Additionally, other users might have existing sessions. All user sessions must be closed.