Deletes all runtime data for the currently loaded Scenes.
This method deletes the following: baked and realtime lightmaps, realtime GI metadata, baked output on Lights, and baked and realtime data on instances (index, ST and per-instance UVs).
This method does not delete lightmaps, Reflection Probes, or the Lighting Data Asset. See also: Lightmapping.ClearLightingDataAsset.