Merge branch 'changelog-remove-dup' into 'master'

Remove duplicate CHANGELOG line for v7.10.0

The other one is 3 lines below the removed.

[ci skip]

See merge request !563

CHANGELOG

@@ -122,7 +122,6 @@ v 7.10.0
   - Fixed link paths for HTTP and SSH on the admin project view (Jeremy Maziarz)
   - Fix and improve help rendering (Sullivan Sénéchal)
   - Fix final line in EmailsOnPush email diff being rendered as error.
-  - Authometic setup GitLab CI project for forks if origin project has GitLab CI enabled
   - Prevent duplicate Buildkite service creation.
   - Fix git over ssh errors 'fatal: protocol error: bad line length character' 
   - Automatically setup GitLab CI project for forks if origin project has GitLab CI enabled