style: 🎨 remove unused import (#747)

## Description

This just removes the unused import that was bothering the linter.


## Reviewer Focus

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This PR needs a quick review.



## Checklist

- [x] Added or updated tests
- [x] Tests passed locally
- [x] Linted and formatted code
- [x] Build passed locally
- [x] Updated documentation

sprout/core/path_resource_functions.py

@@ -3,7 +3,6 @@
 from sprout.core import path_package
 from sprout.core.verify_is_dir import verify_is_dir
 from sprout.core.verify_is_file import verify_is_file
-from sprout.core.verify_is_package_dir import verify_is_package_dir
 from sprout.core.verify_is_resource_dir import verify_is_resource_dir