remove bogus submodule
remove bogus submodule

Signed-off-by: Chris Brown <eb0819782e2e967e3d4f4d71eab0c647ed2659cf@pivotal.io>

beni55/concourse,longnguyen11288/concourse,concourse/concourse,holgero/concourse,zachgersh/concourse,holgero/concourse,zachgersh/concourse,longnguyen11288/concourse,Amit-PivotalLabs/concourse,zachgersh/concourse,beni55/concourse,concourse/concourse,sedouard/concourse,CloudCredo/concourse,holgero/concourse,concourse/concourse,cjcjameson/concourse,sedouard/concourse,CloudCredo/concourse,jbayer/concourse,sedouard/concourse,cjcjameson/concourse,beni55/concourse,squeedee/concourse,jbayer/concourse,jbayer/concourse,CloudCredo/concourse,squeedee/concourse,concourse/concourse,Amit-PivotalLabs/concourse,longnguyen11288/concourse,Amit-PivotalLabs/concourse,cjcjameson/concourse,squeedee/concourse,concourse/concourse