remove creation/setup of 'build' user from RHEL-7 image
remove creation/setup of 'build' user from RHEL-7 image

pivotal-jbarrett/geode-native,pivotal-jbarrett/geode-native,pivotal-jbarrett/geode-native,pivotal-jbarrett/geode-native,pivotal-jbarrett/geode-native,pivotal-jbarrett/geode-native,pivotal-jbarrett/geode-native