Turn off Killed messages

[The_Federov]

Is there a way to turn off the messages that show up when someone is killed/kills someone? Like during events all I see is

Skyler10 killed ghost_face_killa!
Than it shows again in a lighter color
Skyler10 killed ghost_face_killa!
Than somone nukes.
Skyler10 killed ghost_face_killa!
Skyler10 killed ghost_face_killa!
Skyler10 killed ghost_face_killa!
Skyler10 killed ghost_face_killa!
Skyler10 killed ghost_face_killa!
Skyler10 killed ghost_face_killa!
Skyler10 killed ghost_face_killa!
Skyler10 killed ghost_face_killa!

Not only is this annoying, it lags me because my computer is complete ****. So, is there a way to fix this? or stop it from happening? If not, can you make a way to disable it? Thanks Tim.