remove unreferenced footnote

docs/basics/101-138-sharethirdparty.rst

@@ -250,10 +250,3 @@ In addition to this, the section :ref:`privacy` contains tips and strategies on
 .. [#f1] Requires the `datalad-osf extension`_.
 
 .. [#f2] In addition to not storing annexed data, most Git repository hosting services also have a size limit for files kept in Git. So while you could *theoretically* commit a sizable file into Git, this would not only negatively impact the performance of your dataset as Git doesn't handle large files well, but it would also `prevent your dataset to be published to a Git repository hosting service like GitHub <https://docs.github.com/en/repositories/working-with-files/managing-large-files/about-large-files-on-github>`_.
-
-.. [#f5] Old versions of :term:`GitLab`, on the other hand, provide a git-annex configuration. It
-         is disabled by default, and to enable it you would need to have administrative
-         access to the server and client side of your GitLab instance.
-         Alternatively, GitHub can integrate with
-         `Git LFS`_, a non-free, centralized service
-         that allows to store large file contents. :ref:`gitlfs` shows an example on how to use their free trial version.