feature: added remove advertisement from all collections.
feature: added remove advertisement from all collections.

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