remove dbus for windows build and change audio dep logic

Authored by brute4s99 on Jul 13 2019, 6:06 PM.

Description

remove dbus for windows build and change audio dep logic

Summary:
These audio dependencies aren't used by KNotifications on Win32.
Similarly, DBus is not used on Windows.

Reviewers: broulik, nicolasfella

Reviewed By: nicolasfella

Subscribers: bcooksley, apol, nicolasfella, kde-frameworks-devel

Tags: Frameworks

Differential Revision: https://phabricator.kde.org/D21660