staging: dgap: removes references to proc code

This patch removes references to proc code in this
driver. It still has proc.c, proc.h and a board
state called NEEDS_PROC_CREATION. All three of
these will be removed in another patch.

Signed-off-by: Lidza Louina <lidza.louina@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>