Remove H904 from hacking ignore list
Remove H904 from hacking ignore list

Hacking H904 was removed in b1fe19ebebe47a36b905d709467f5e82521bbd96,
so don't need it anymore.

Change-Id: I148635b56c6d2327449f272277354abb8261a0d7

0xf2/stackalytics,openstack/stackalytics,Mirantis/stackalytics,0xf2/stackalytics,openstack/stackalytics,Mirantis/stackalytics,0xf2/stackalytics,stackforge/stackalytics,openstack/stackalytics,Mirantis/stackalytics,0xf2/stackalytics,openstack/stackalytics,stackforge/stackalytics,stackforge/stackalytics