Removed duplicate code - Githubissues

[ ] Appropriate branch selected (all PRs must first be merged to dev before they can be merged to master)
[ ] Any modified or new methods or classes have helpful JavaDoc and code is thoroughly commented
[ ] The description lists all applicable issues this PR seeks to resolve
[ ] The description lists any configuration setting(s) that differ from the default settings
[ ] All tests and CI builds passing
[ ] The description lists all relevant PRs included in this release (remove this if not merging to master)
[ ] Code coverage does not significantly worsen (ideally it improves) (remove this if not merging to master)

Removed duplicate code.

conveyal / gtfs-lib