- remove version from messages

...ain/scala/org/bigbluebutton/core/BigBlueButtonActor.scala

.../src/main/scala/org/bigbluebutton/core/MeetingActor.scala

...rc/main/scala/org/bigbluebutton/core/api/InMessages.scala

...c/main/scala/org/bigbluebutton/core/api/OutMessages.scala

.../src/main/scala/org/bigbluebutton/core/apps/PollApp.scala

...src/main/scala/org/bigbluebutton/core/apps/UsersApp.scala

...rc/main/scala/org/bigbluebutton/core/messaging/Util.scala

...tton/core/pubsub/senders/ChatMessageToJsonConverter.scala

...n/core/pubsub/senders/MeetingMessageToJsonConverter.scala

...re/pubsub/senders/PesentationMessageToJsonConverter.scala

...ton/core/pubsub/senders/UsersMessageToJsonConverter.scala

...ore/pubsub/senders/WhiteboardMessageToJsonConverter.scala