distcc: remove deprecated package

It's been deprecated since feb 2014 and it'll be a year for the 2015.02
release so remove it.
And it's basically useless without a target toolchain.

Signed-off-by: Gustavo Zacarias <gustavo@zacarias.com.ar>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>