SNOW-683056 Increase test coverage for type_utils.py

[sfc-gh-sfan]

Description

Added/Modified tests to increase test coverage. Also removed some unused code path.

Testing

unit/integ tests

Please answer these questions before submitting your pull requests. Thanks!

1. What GitHub issue is this PR addressing? Make sure that there is an accompanying issue to your PR.

   Fixes SNOW-683056

2. Fill out the following pre-review checklist:

   • [ ] I am adding a new automated test(s) to verify correctness of my new code
   • [ ] I am adding new logging messages
   • [ ] I am adding a new telemetry message
   • [ ] I am adding new credentials
   • [ ] I am adding a new dependency

3. Please describe how your code solves the related issue.

   Added/Modified tests to increase test coverage. Also removed some unused code path.