Remove step to wait for data-state == focused because it is not being picked up

test_camera_multiple_shots has been failing on v1.0.1 and it is reproducible on my phone. The problem seems to be that the condition that we are waiting for in ```take_picture``` is never being seen, so the test always times out there. Removing that wait seems to allow the test to pass normally. 

@AaronMT, I am opening this as a pull request, rather than just committing it as I see you wrote the original test. Do you think it's ok to remove this wait?