Remove obsolete configuration options.

bigbluebutton-client/resources/config.xml.template

bigbluebutton-client/src/org/bigbluebutton/core/Options.as

...-client/src/org/bigbluebutton/main/model/LayoutOptions.as

...rc/org/bigbluebutton/modules/polling/model/PollOptions.as

.../bigbluebutton/modules/present/ui/views/PresentOptions.as

...src/org/bigbluebutton/modules/users/model/UsersOptions.as

...bigbluebutton/modules/videoconf/model/VideoConfOptions.as