Revert "Upgraded H2."
Revert "Upgraded H2."

This reverts commit 277bda903a59aa14f24cba794e9bf246f116e139.

axiomsoftware/axiom-stack,axiomsoftware/axiom-stack,axiomsoftware/axiom-stack,axiomsoftware/axiom-stack,axiomsoftware/axiom-stack,axiomsoftware/axiom-stack