To Remove Disconnected Session

 function Remove-DisconnectedSessions {

    # Get all user sessions on the machine

    $sessions = query user

    foreach ($session in $sessions) {

        # Split the session details into an array

        $sessionDetails = $session -split '\s+'

        # Check if the session state is 'Disc' (Disconnected)

        if ($sessionDetails[3] -eq 'Disc') {

            $sessionId = $sessionDetails[2]

            # Log off the disconnected session

            logoff $sessionId

            Write-Host "Disconnected session with ID $sessionId has been logged off."

        }

    }

}

Remove-DisconnectedSessions

This can be used in SCCM Script and run against any Device collection