Soundmanager needs to be enabled outside of hmi packagegroup

Soundmanager needs to be enabled outside of hmi packagegroup

This changeset removes agl-service-soundmanager-2017 from meta-agl-devel/meta-hmi-framework/recipes-platform/packagegroups/packagegroup-hmi-framework.bb
b/c this needs to be handled differently as discussed in https://gerrit.automotivelinux.org/gerrit/#/c/11643/ .

Thus we need to separate it from the hmi-framework packagegroup.

Change-Id: Iafdff1cf1c8d29ddb89960a61a1787e630baa9c4
Signed-off-by: Jan-Simon Möller <jsmoeller@linuxfoundation.org>