Revert "Pushed up avro version -- needed for Tachyon & data-layer"

This reverts commit beac8a0bd239328b4b23a77dfbce1f5cd9094e78.
Revert "Add new Date primitive data type into HIVE."

This reverts commit a651d35c5adab6df48d3dfa1938fb69921e55c39.