you can just stop those from spawning at all. Maybe the simplest way to solve the problem? This is easily done if you using ASM http://arkservermanager.freeforums.net/
If not it’s probably something you have to type in the .ini, or perhaps your server hosting company has it’s own GUI for it?
You could even replace their spawns with a different dino so something will fill their spot. Also, maybe making them none tamable is a better solution for you? I’m sure there is plenty of info on how to do all of the thing that have been suggested with a quick google.