Remove hover underline of tree’s external links
What does this MR do?
Removes hover underline of tree’s external links
Why was this MR needed?
The underline was unnecessarily introduced in https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/14399
Does this MR meet the acceptance criteria?
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Changelog entry added, if necessary - Review
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Has been reviewed by UX -
Has been reviewed by Frontend
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What are the relevant issue numbers?
Edited by Pedro Moreira da Silva