Merge pull request #12211 from ramonlsouza/unused-code

...ts/api/group-chat-msg/server/modifiers/addGroupChatMsg.js

...ton-html5/imports/api/users/server/modifiers/setMobile.js

bigbluebutton-html5/imports/startup/client/base.jsx

...-html5/imports/ui/components/connection-status/service.js

...uebutton-html5/imports/ui/components/user-list/service.js