ATHENS (Reuters) - Officials from the European Union and the International Monetary Fund return to Athens on Sunday to assess Greece's performance under a bailout plan as the government plays down the prospect of public sector job cuts. The heads of the "troika" mission from the EU, IMF and the European Central Bank will meet Finance Minister Yannis Stournaras to review progress on privatizations, tax administration reforms, bank recapitalization and steps to shrink the public sector. ...