As per casacore PR #990 (https://github.com/casacore/casacore/pull/990) the support for obsolete CHANNEL_SELECTION keyword is removed and method MSIter::startChan() removed (it would otherwise always return 0).
This commit will eliminate any call to startChan() and remove adding the unused CHANNEL_SELECTION keyword.
This is similar to the work done in CASA itself (ticket CAS-12864).
As per casacore PR #990 (https://github.com/casacore/casacore/pull/990) the support for obsolete CHANNEL_SELECTION keyword is removed and method MSIter::startChan() removed (it would otherwise always return 0). This commit will eliminate any call to startChan() and remove adding the unused CHANNEL_SELECTION keyword. This is similar to the work done in CASA itself (ticket CAS-12864).