To uninstall ca-certificates-mono just follow these instructions.
sudo apt-get remove ca-certificates-mono
This will remove just the ca-certificates-mono package itself.
sudo apt-get remove --auto-remove ca-certificates-mono
This will remove the ca-certificates-mono package and any other dependant packages which are no longer needed.
If you also want to delete your local/config files for ca-certificates-mono then this will work.
sudo apt-get purge ca-certificates-mono
Or similarly, like this ca-certificates-mono
sudo apt-get purge --auto-remove ca-certificates-mono
|Maintainer||Debian Mono Group <[email protected]>|
|Description||Common CA certificates (Mono keystore) ECMA/ISO Standards. Mono is an open source effort led by Xamarin. Mono provides a complete CLR (Common Language Runtime) including compiler and runtime, which can produce and execute CIL (Common Intermediate Language) bytecode (aka assemblies), and a class library.|