[docs] Removed the note about KUDU-1626
[docs] Removed the note about KUDU-1626

Change-Id: Ia7b5e127cd9d1e2bda60a20de62fafd95e5f93e3
Reviewed-on: http://gerrit.cloudera.org:8080/9020
Tested-by: Kudu Jenkins
Reviewed-by: Jean-Daniel Cryans <4bf4c125525b8623ac45dfd7774cbf531df19085@apache.org>

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