[kde-frameworks/kguiaddons] Remove USE flags and dependencies for features moved to kimageformats.

Upstream commit 8f4e4fc803e5df4f0f0fd4f94dfce528077ef0ed.

Package-Manager: portage-2.2.7
[kde-frameworks/kimageformats] New package, split from kguiaddons.

Package-Manager: portage-2.2.7
[sets] Update kde-frameworks-live.
[kde-base/knotes] Fix build due to requirement of new noteshared library, wrt bug #491626.
[media-sound/amarok] doesn't need strigi any more