Deleted no-longer-used methods from RenderEngine.
Deleted no-longer-used methods from RenderEngine.

rismalrv/pystache,charbeljc/pystache,beni55/pystache,defunkt/pystache,beni55/pystache,charbeljc/pystache,jrnold/pystache,nitish116/pystache,rismalrv/pystache,rismalrv/pystache,nitish116/pystache,jrnold/pystache,arlenesr28/pystache,nitish116/pystache,harsh00008/pystache,arlenesr28/pystache,arlenesr28/pystache,harsh00008/pystache,harsh00008/pystache