Renderer: Blit texture to window instead of using a full renderpass

This may improve performance and allow for render targets to customize how they blit the final texture (allowing for render-to-texture)

include/Nazara/Graphics/ForwardFramePipeline.hpp

@@ -121,7 +121,6 @@ namespace Nz
 			{
 				std::size_t finalAttachment;
 				std::vector<const ViewerData*> viewers;
-				ShaderBindingPtr blitShaderBinding;
 			};
 
 			struct SkeletonInstanceData