tree 1f0897b51d8fc05a706a55f0b61ce69e9f376ba0
parent f8cc99065cb9faee7456fd204de47547f8dd79da
author Clint Byrum <clint@fewbar.com> 1490448065 -0700
committer Clint Byrum <clint@fewbar.com> 1490448065 -0700

Remove NullChange

Follow-up to refactoring out Changeish, NullChange isn't used anymore
and can be removed.

Change-Id: I9208062d2cd3a766761408a592b1e8d3123139cd
Story: 2000781
Task: 3303