Remove unused empty file
Remove unused empty file

It seems that `index.rb` is not referenced from anywhere.

duggiefresh/website,tmock12/website,Eric-Guo/website,MinxianLi/ember,maczniak/emberjs,koriroys/emberjs-website,kpfefferle/website,tmock12/website,shearwater-intl/website,workmanw/ember-website,Eric-Guo/website,AgilionApps/website,workmanw/ember-website,elwayman02/website,koriroys/emberjs-website,zeppelin/emberjs-website,cyberkoi/website,ktornwall/website,MinxianLi/ember,Eric-Guo/website,cllns/emberjs-website,datajohnny/website,greyhwndz/website,davidpett/website,ktornwall/website,rwjblue/website,quangv/website,workmanw/ember-website,SaladFork/emberjs-website,datajohnny/website,AgilionApps/website,wifelette/website,balupton/ember-website,mrjavascript/website,mrjavascript/website,AaronSikes/website,knownasilya/website,raycohen/website,MinxianLi/ember,jimmay5469/website,kkenan/website,josemarluedke/ember-website,jimmay5469/website,maxcal/website,elidupuis/website,josemarluedke/ember-website,zeppelin/emberjs-website,AgilionApps/website,quangv/website,AaronSikes/website,kkenan/website,elidupuis/website,SaladFork/emberjs-website,balupton/ember-website,josemarluedke/ember-website,bmac/website,duggiefresh/website,bmac/website,bmac/website,cyberkoi/website,wifelette/website,raycohen/website,cyberkoi/website,cllns/emberjs-website,rwjblue/website,elidupuis/website,martndemus/website,duggiefresh/website,wifelette/website,kpfefferle/website,zeppelin/emberjs-website,greyhwndz/website,davidpett/website,Nick-Cotter/aboutme,AaronSikes/website,zeppelin/emberjs-website,SaladFork/emberjs-website,elwayman02/website,davidpett/website,kpfefferle/website,knownasilya/website,EricSchank/website,kkenan/website,cllns/emberjs-website,SaladFork/emberjs-website,workmanw/ember-website,praxxis/website,quangv/website,jimmay5469/website,Nick-Cotter/aboutme,martndemus/website,EricSchank/website,shearwater-intl/website,maxcal/website,elwayman02/website,martndemus/website,datajohnny/website,EricSchank/website,shearwater-intl/website,balupton/ember-website,mrjavascript/website,josemarluedke/ember-website,greyhwndz/website,koriroys/emberjs-website,maczniak/emberjs,tmock12/website,ktornwall/website,maxcal/website,raycohen/website,praxxis/website,bmac/website