backends/x11: Cleanup KWinXRenderUtils and move it to eglx11common
The XRender backend has been removed, leaving most of KWinXRenderUtils unused.
The few features that are still used, notable XRenderPicture
and pict format
are moved into the x11/common directory.
Kai Uwe Broulik kai_uwe.broulik@mbition.io on behalf of MBition GmbH
https://github.com/mercedes-benz/daimler-foss/blob/master/PROVIDER_INFORMATION.md