Remove backwards-compatability layer from 0.6 categorical plot changes
Remove backwards-compatability layer from 0.6 categorical plot changes

lukauskas/seaborn,petebachant/seaborn,mwaskom/seaborn,lukauskas/seaborn,anntzer/seaborn,anntzer/seaborn,sauliusl/seaborn,phobson/seaborn,mwaskom/seaborn,arokem/seaborn,arokem/seaborn,phobson/seaborn