Spammy debug output on commands

Type anything into the chat.
Look into the debug console.
Every time, you get something like this:

Client> 2013-09-05 17:07:44 [SERVER] [INFO] TranslatableComponent{key='chat.type
.text', args=[pokechu22, Test], siblings=[], style=Style{hasParent=false, color=
null, bold=null, italic=null, underlined=null, obfuscated=null}}
Client> 2013-09-05 17:07:44 [CLIENT] [INFO] [CHAT] <pokechu22> Test

If you were a serverowner, this would overwhelm your console.