Removing the FortiMonitor agent from your server should use the same mechanism which was used to install but with the platform-specific differences. Each platform is covered below.
yum remove panopta-agent
apt-get remove panopta-agent && apt-get purge panopta-agent
python /usr/bin/panopta-agent/panopta_agent.py --uninstall
If you originally used the MSI to install the agent:
Go to Add Remove Programs and uninstall the agent
If you originally used PowerShell to install the agent:
Open an administrator Powershell window and change directory to where the original agent installer is. If it's no longer there, you can re-download it. [.NET 4.5] [.NET 4]