Remove duplicated file extension check (tiny change)

[adamwirth]

Description

Looks like it was checking \.gpx$ twice. Is there some other file suffix to replace the second check with instead of removing it entirely?

Issue number and link

N/A

Testing plan

Linting level change.
Should I be adding my name to contributors.md/changes.md if I am just editing something so miniscule? That feels insincere somehow, compared to other PRs' work.

Author checklist

• I have submitted a Contributor License Agreement
• I have added my name to CONTRIBUTORS.md
• I have updated CHANGES.md with a short summary of my change
• I have added or updated unit tests to ensure consistent code coverage
• I have updated the inline documentation, and included code examples where relevant
• I have performed a self-review of my code

[github-actions]

Thank you for the pull request, @adamwirth!

✅ We can confirm we have a CLA on file for you.

[ggetz]

Thanks for the fix @adamwirth! This fix looks good to me.

Could you please add yourself to CONTRIBUTORS.md?

[adamwirth]

Thanks for the fix @adamwirth! This fix looks good to me.

Could you please add yourself to CONTRIBUTORS.md?

Added!

[ggetz]

Great! Thanks @adamwirth!