Remove unnecessary file.

[mairanteodoro]

This PR removes an unnecessary file.

Checklist

• [ ] added entry in CHANGES.rst (either in Bug Fixes or Changes to API)
• [ ] updated relevant tests
• [ ] updated relevant documentation
• [ ] updated relevant milestone(s)
• [X] added relevant label(s)

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (497789d) 82.61% compared to head (2b8e489) 82.61%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## stcal-alignment #198 +/- ## ================================================ Coverage 82.61% 82.61% ================================================ Files 34 34 Lines 5901 5901 ================================================ Hits 4875 4875 Misses 1026 1026 ```

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