Stop writing SG aliases for MetaData objects in MetaContainers
The aliases were added by code writing xAOD objects which was reused for MetaContainers. Now fixed. Fix for https://its.cern.ch/jira/browse/ATLASSIM-4610
The aliases were added by code writing xAOD objects which was reused for MetaContainers. Now fixed. Fix for https://its.cern.ch/jira/browse/ATLASSIM-4610