STYLE: Remove unimplemented function declaration in MetaObjectDocument

Change-Id: I5d0779e0046dcf0111901ee2221997c33930fd26
BUG: Fix unread variable in TubeGraphKernel

Change-Id: If74e06aab2adf2c94a020e5c2a8a189c8c3ef703
Merge topic 'FixUnunsedVariableTubeGraphKernel'

24e7c10 BUG: Fix unread variable in TubeGraphKernel
Merge topic 'RemoveUnimplementedReadStream'

37d8d25 STYLE: Remove unimplemented function declaration in MetaObjectDocument