Clean up exempt studies

[cullerton]

No description provided.

[sentry-io]

🔍 Existing Issues For Review

Your pull request is modifying functions with the following pre-existing issues:

📄 File: crc/services/study_service.py

Function	Unhandled Issue
sync_with_protocol_builder_if_enabled	KeyError: 0 /v1_0.crc_api_study_user_studies Event Count: 16

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[sentry-io]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ SystemExit: 1 /v1_0.crc_api_study_user_studies View Issue

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