Revert "ENG-15842 Improve getColumnIndex performance"
Revert "ENG-15842 Improve getColumnIndex performance"

This reverts commit b8249594fc47e6efe5f8dc4ca4443dbdff4cfe71.

VoltDB/voltdb,VoltDB/voltdb,VoltDB/voltdb,VoltDB/voltdb,VoltDB/voltdb,VoltDB/voltdb,VoltDB/voltdb