Revert "specific domains for IBM added"

gitdm doesn't need this, and it only confuses things because we
use country code in all emails.

This reverts commit de3bc349b2.

Change-Id: I3ed6ff40321a3a5bf42eb362161939dd3b5d6a74
Reviewed-on: https://review.openstack.org/29698
Reviewed-by: Monty Taylor <mordred@inaugust.com>
Approved: Sean Dague <sean@dague.net>
Tested-by: Jenkins

openstack-config/domain-map

@@ -4,15 +4,12 @@ ansolabs.com Nebula
 atomia.com Atomia
 att.com AT&T
 attinteractive.com AT&T
-au1.ibm.com IBM
-ca.ibm.com IBM
 canonical.com Canonical
 cern.ch CERN
 cisco.com Cisco Systems
 citrix.com Citrix
 cloud.com Citrix Systems
 cloudscaling.com Cloudscaling
-cn.ibm.com IBM
 dell.com Dell
 denali-systems.com Denali Systems
 dreamhost.com DreamHost
@@ -23,12 +20,10 @@ gluster.com Red Hat
 griddynamics.com Grid Dynamics
 hp.com HP
 ibm.com IBM
-il.ibm.com IBM
 inktank.com Inktank
 intel.com Intel
 internap.com Internap
 isi.edu ISI
-linux.vnet.ibm.com IBM
 locaweb.com.br Locaweb
 lahondaresearch.org La Honda Research
 managedit.ie Managed IT
@@ -63,7 +58,6 @@ suse.com SUSE
 suse.cz SUSE
 swiftstack.com SwiftStack
 unimelb.edu.au University of Melbourne
-us.ibm.com IBM
 valinux.co.jp VA Linux
 vertex.co.in NTT
 vexxhost.com VexxHost