Remove unused parameters in _normalize_user()
Remove unused parameters in _normalize_user()

_normalize_user() passes multiple parameters into make_user_id() call.
However parts of them are not used in make_user_id() because "emails"
is mandatory on the default data on its json-schema definition and
make_user_id() considers launchpad_id and emails as user_id before
checking these parameters.
So this patch removes such unused parameters for the cleanup.

Change-Id: I09070ceb226f9ea1b45c36a24c492cac4e606be2

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