Merge pull request #12005 from ramonlsouza/remove-unused-imports

...ports/ui/components/actions-bar/screenshare/component.jsx

bigbluebutton-html5/imports/ui/components/chat/service.js

...s/ui/components/components-data/users-context/adapter.jsx

...orts/ui/components/connection-status/button/component.jsx

...s/ui/components/whiteboard/annotations/poll/component.jsx

bigbluebutton-html5/imports/ui/services/auth/index.js