Remove unused shared stylesheet.
Remove unused shared stylesheet.

I think this stylesheet was made redundant in our frontend restyle and
in our backend switch to twitter bootstrap.

alphagov/whitehall,YOTOV-LIMITED/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,askl56/whitehall,YOTOV-LIMITED/whitehall,robinwhittleton/whitehall,robinwhittleton/whitehall,alphagov/whitehall,YOTOV-LIMITED/whitehall,alphagov/whitehall,alphagov/whitehall,hotvulcan/whitehall,ggoral/whitehall,askl56/whitehall,robinwhittleton/whitehall,hotvulcan/whitehall,ggoral/whitehall,hotvulcan/whitehall,ggoral/whitehall,robinwhittleton/whitehall,hotvulcan/whitehall,askl56/whitehall,askl56/whitehall