Deleted file with obsolete routines

[JurgenZach-NOAA]

Response to issue 318: https://github.com/NOAA-OWP/t-route/issues/318

Additions

-

Removals

• Removal of writetoFile routine recommended in Issue 318
• The only other function in utils.py in src/troute-routing/troute/routing/ is another trivial routine that is not called from anywhere: constant_qlats

Changes

-

Testing

1. Run any test - removed functions were not called anywhere

Screenshots

Notes

-

Todos

-

Checklist

• [ ] PR has an informative and human-readable title
• [ ] Changes are limited to a single goal (no scope creep)
• [ ] Code can be automatically merged (no conflicts)
• [ ] Code follows project standards (link if applicable)
• [ ] Passes all existing automated tests
• [ ] Any change in functionality is tested
• [ ] New functions are documented (with a description, list of inputs, and expected output)
• [ ] Placeholder code is flagged / future todos are captured in comments
• [ ] Visually tested in supported browsers and devices (see checklist below :point_down:)
• [ ] Project documentation has been updated (including the "Unreleased" section of the CHANGELOG)
• [ ] Reviewers requested with the Reviewers tool :arrow_right:

Testing checklist

Target Environment support

• [ ] Windows
• [ ] Linux
• [ ] Browser

Accessibility

• [ ] Keyboard friendly
• [ ] Screen reader friendly

Other

• [ ] Is useable without CSS
• [ ] Is useable without JS
• [ ] Flexible from small to large screens
• [ ] No linting errors or warnings
• [ ] JavaScript tests are passing