Update packager.sh and remove old code
Update packager.sh and remove old code


Former-commit-id: 792f37ef05cd10161e79abbbb6af2c2e3952096a [formerly e41348a225d4b5be3dc5f6fcce08c1059798ce34]
Former-commit-id: 7de750bfb701799d1732bafd35c292e10b013d89
gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine,gem/oq-engine