MFH: r466676 r466677

Update gitlab to version 10.5.6.
For changelog what changed to 10.5 release see here: https://about.gitlab.com/2018/02/22/gitlab-10-5-released/

Reviewed by: tz (mentor)
Approved by: tz (mentor)
Differential Revision: https://reviews.freebsd.org/D14963

The commit r466676 failed to remove an obsolete file, this commit fixes this.

Reviewed by: tz (mentor)
Approved by: tz (mentor)
Differential Revision: https://reviews.freebsd.org/D14963

Approved by: ports-secteam (eadler)