Getting rid of Waves Plug-ins!

So like maybe 6 months ago I installed some random Waves plug-ins that expired after like 14 days or whatever. Now every-time I run pro-tools this stupid reminder comes up that the Waves Plug-ins have expired and that I should buy (which comes out to like $1000 or some ridiculous amount of money) Not only is it annoying but now whenever I try to run Final Cut Express the same Waves reminder comes up, but worst of all crashes Final Cut Express 100% of the time not allowing me to even run the program. I went to finder and deleted all Waves related files however I have found that some Waves files and folders are not allowing me to delete them (or re-appear after I delete them)...HELP!!!