Remove I3DEngine CryCommon Interface (#567)

Delete:

- I3DEngine
- Missions
- Time of day
- GameEffectsSystem Gem
- ImageProcessing Gem
- SVOGI Gem
- Various other things that don't do anything now that the legacy renderer has been removed.

Code/Sandbox/Editor/LyViewPaneNames.h

@@ -44,7 +44,6 @@ namespace LyViewPane
     static const char* const TerrainTool = "Terrain Tool";
     static const char* const TerrainTextureLayers = "Terrain Texture Layers";
     static const char* const ParticleEditor = "Particle Editor";
-    static const char* const TimeOfDayEditor = "Time Of Day";
     static const char* const AudioControlsEditor = "Audio Controls Editor";
     static const char* const SubstanceEditor = "Substance Editor";
     static const char* const VegetationEditor = "Vegetation Editor";