Revert "Implement the instanced draw calls in RendererGL." Causing crashes in some dEQP tests. This reverts commit c1948415e52dbaefb0d3176b75a58a7b86bd091a. Change-Id: Idedb32484b4f2b09090346bc4228fe536190a621 Reviewed-on: https://chromium-review.googlesource.com/296440 Reviewed-by: Geoff Lang <geofflang@chromium.org> Tested-by: Geoff Lang <geofflang@chromium.org>