Whether he quit or was forced, Louis CK is no longer speaking at the Radio and Television Correspondents’ Assn. Dinner. The reason? He has in the past referred to Sarah Palin as a cunt. Scrambling desperately to make up for their idol Rush Limbaugh being called out for calling Sandra Fluke sexist names and making false claims about her, Fox News’ Greta Van Susteren and Kirsten Powers have made a