PDI-10467 - Data Grid step: Meta tab values for all columns get lost upon going to Data tab.

What was done:
1) Removed extra method call
Merge pull request #154 from kolinus/PDI-10467

PDI-10467 - Data Grid step: Meta tab values for all columns get lost upo...
Merge branch 'master' of https://github.com/pentaho/pentaho-kettle