Normally the Uninstall button is disabled for the Core cartridges on the Cartridge Inventory dashboard. Hence, the only way to remove them is by using the command line. Below command can be used generically to uninstall the cartridges.
fglcmd -usr foglight -pwd foglight -cmd cartridge:uninstall [-n name] [-v version]
where -usr and -pwd are the user credentials to login to FMS console.
[n name] Specifies the name of the cartridge that needs to be uninstalled.
[v version] Specifies the version of the cartridge that needs to be uninstalled.