Red code legacy renderer (#383)

- Remove some references to gEnv->pRenderer/GetIEditor()->GetRenderer() that is now always null.
- Restore the debug console to existence.
- Stop building the following in preparation for their removal:

Code/CryEngine/Cry3DEngine/*
Code/CryEngine/RenderDll/*
Code/Tools/CryFXC/*
Code/Tools/HLSLCrossCompiler/*
Code/Tools/HLSLCrossCompilerMETAL/*
Code/Tools/RC/*
Code/Tools/ShaderCacheGen/*
Tools/CrySCompileServer/*

Code/CryEngine/CrySystem/CMakeLists.txt

@@ -60,8 +60,6 @@ ly_add_target(
             Legacy::CrySystem.XMLBinary
             Legacy::RemoteConsoleCore
             AZ::AzFramework
-    RUNTIME_DEPENDENCIES
-        Legacy::Cry3DEngine
 )
 
 ly_add_source_properties(