devcoredump: remove contact information

That email address hasn't existed for a long time, and the
mailing address is pretty useless; remove all of this.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20210528100314.d419f6e8e2d2.Ica8076036c755d6f782becd62d04c41361323130@changeid


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>