LBSD-2263 Removing some unneeded import to avoid flake8 complain
LBSD-2263 Removing some unneeded import to avoid flake8 complain

superdesk/liveblog,liveblog/liveblog,liveblog/liveblog,superdesk/liveblog,liveblog/liveblog,liveblog/liveblog,superdesk/liveblog,liveblog/liveblog,superdesk/liveblog