Please run this PowerShell script on all your systems from which you want to delete the shortcut for the Pulseway Manager for all users. In order to do this you will need to create an automated task which will run this script:
Remove-Item "C:\Users\*\Desktop\Pulseway Manager.lnk"
Read more about Automation from here.
Note, this script will not work on Windws XP, Windows server 2003, because the path is different.