How to remove a user certificate on N4

[aloaraycr]

Hi, please Android users help me.

I have an N4 with Android 4.3, i installed Pocketmine realms certificate. Know i want to removet. I hace search everywhere and in Config>Security>Trusted Certificates>System or User, i cant find the certificate, i was wondering if the "Removing all certificates" option, involves only user installed certificates or Both Certificates (System-User) I dont want to loose all muy certificates, only Pocket realms.