Revert "Send notification email for new changes created by ChangeInserter"

This reverts commit 41b51ccd9c740b4f93e0b94f8b9375b4f7a8d762.
Servers don't run:

   Guice creation errors: 1) No implementation for
     com.google.gerrit.server.util.RequestScopePropagator
     was bound

Change-Id: I484fae161fbc0ce74c8dbb6b9c532476bcac810b
2 files changed