Revert "temporary rebalance progress debugging"

This reverts commit f36b87a8179e6430cb086b3938bf325fdfee00de.

Change-Id: Ifa2f262635679d4c553c6151346aa8ea1681a9ad
Reviewed-on: http://review.couchbase.org/39952
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Pavel Paulau <pavel.paulau@gmail.com>