revert of commit f2d936c58b9788db060cab6bd1aecc26df96f4a4, FlxG.antialia...

FlxG.antialiasByDefault does modify the default antialiasing value on FlxSprite, camera.antialiasing does not
image to clarify: http://i.imgur.com/hKiaqT0.png
Even though the camera should be antialiased, the image is not