ibmvnic: Remove module author mailing address

The original author left the project and so far has not
responded to emails sent to the listed address.

Signed-off-by: John Allen <jallen@linux.vnet.ibm.com>
Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>