As already mentioned, many of Dish's DVRs run Linux for the underlying OS. If you were to strip all remnants of code that you weren't using, who knows what might break. It is possible, of course, just look at embedded systems. They are stripped down to ONLY what they need. In these cases though, they'll NEVER need this stuff in the future. Dish isn't going to remove this stuff because it's very possible that they'll use lots of this. DHCP to grab an IP address, HTTP to run a web server (remote access to the DVRs ?), etc, etc.