Removed old clipping detection.  Retain boundary detection for performance (drawing outside clip is faster than drawing inside clip but not free).
Removed old clipping detection.  Retain boundary detection for performance (drawing outside clip is faster than drawing inside clip but not free).

RobertoMalatesta/Flotr2,HumbleSoftware/Flotr2,alanponce/Flotr2,jessiejea/Flotr2,RobertoMalatesta/Flotr2,nicgallardo/Flotr2,nicgallardo/Flotr2,alanponce/Flotr2,beastlike/Flotr2,beastlike/Flotr2,HumbleSoftware/Flotr2,jessiejea/Flotr2,beastlike/Flotr2,jessiejea/Flotr2,alanponce/Flotr2