You cannot do it in the tsmmc.msc consiole. You could RDP into each machine and disable it under Administrative Tools>Terminal Services Configuration. This really only applies to Servers. Another option is to use group policy. It is under Computer Configuration\Policies\Adm
inistrativ
e Templates\
Windows Components\Terminal Services\Terminal Server\Printer Redirection
This article may help.
http://blogs.technet.com/askperf/archive/2007/08/24/terminal-server-and-printer-redirection.aspx