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/CryEngine/CrySystem/SystemWin32.cpp

@@ -15,7 +15,6 @@
 #include "System.h"
 #include <time.h>
 
-#include <I3DEngine.h>
 #include <IRenderer.h>
 #include <IMovieSystem.h>
 #include <ILog.h>
@@ -302,23 +301,6 @@ void CSystem::CollectMemStats (ICrySizer* pSizer, MemStatsPurposeEnum nPurpose,
         }
     }
 
-
-    if (m_env.p3DEngine)
-    {
-        SIZER_COMPONENT_NAME(pSizer, "Cry3DEngine");
-        {
-            m_env.p3DEngine->GetMemoryUsage (pSizer);
-            {
-                SIZER_COMPONENT_NAME (pSizer, "$Allocations waste");
-                const SmallModuleInfo* info = FindModuleInfo(stats, "Cry3DEngine.dll");
-                if (info)
-                {
-                    pSizer->AddObject(info, info->memInfo.allocated - info->memInfo.requested);
-                }
-            }
-        }
-    }
-
     if (m_env.pRenderer)
     {
         SIZER_COMPONENT_NAME(pSizer, "CryRenderer");