Remove duplicate issue from 2.16.10 release notes
Remove duplicate issue from 2.16.10 release notes

Issue 10664 was already included in 2.16.9.

Change-Id: Ie180635950ae8ba6782315306a367f49ab0ec2cd

GerritCodeReview/homepage,GerritCodeReview/homepage,GerritCodeReview/homepage,GerritCodeReview/homepage,GerritCodeReview/homepage