develop - Take out check for GL Error on FrambufferRenderbuffer commands in SetRenderTargets

Source: http://www.songho.ca/opengl/gl_fbo.html

FramebufferRenderbuffer should be checked with checkFramebufferStatus(GLFramebuffer) which is being done in the code afterwards.  If we check for GLError here we could be catching errors from previous commands and not this.

This resolves multiple RenderTarget problems for myself which makes heavy use of RenderTargets.

Checked against iOS and Mac Samples.