[NET] GT96100: Delete bitrotting ethernet driver

Code for the EV96100 evaluation board hasn't compiled since at least
November 15, 2003, so it is being deleted as of 2.6.18 due to lack of
a user base.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>