Simple plugin that I was unable to find a release for (aside from some AMX ones, and one post that didn't block ALL of the commands.)
Honestly maybe there is a cvar for this and I'm just an idiot.
All it does is block "Player (RADIO): Thanks!" type messages from spamming chat on large servers.
It doesn't block the sounds that are played with them. But if anyone wants an option for that, make a post and I'll add it in.
There's nothing to setup, no cvars, just drop into your plugins folder and all radio chat messages will be removed.