Added correct Jackson dependencies, and removed dead-code
Added correct Jackson dependencies, and removed dead-code

tobilg/dcos-commons,mesosphere/dcos-commons,comptelfwd/dcos-commons,adragomir/dcos-commons,mesosphere/dcos-commons,tobilg/dcos-commons,tobilg/dcos-commons,tobilg/dcos-commons,tobilg/dcos-commons,vishnu2kmohan/dcos-commons,comptelfwd/dcos-commons,adragomir/dcos-commons,adragomir/dcos-commons,comptelfwd/dcos-commons,mesosphere/dcos-commons,vishnu2kmohan/dcos-commons,comptelfwd/dcos-commons,mesosphere/dcos-commons,vishnu2kmohan/dcos-commons,comptelfwd/dcos-commons,vishnu2kmohan/dcos-commons,comptelfwd/dcos-commons,mesosphere/dcos-commons,adragomir/dcos-commons,adragomir/dcos-commons,vishnu2kmohan/dcos-commons