Merge the merge request, removing the branch on both the local and the remote

glab mr merge

Merge GitLab merge requests.
More information: <https://glab.readthedocs.io/en/latest/mr/merge.html>.
Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

glab mr merge --remove-source-branch

click the source code to copy