chore: remove old migration scripts

[stefl]

Description

• We have Sonar complaints for two one-time migration scripts
• Rather than update and maintain them, I propose we delete them

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
oak-ai-lesson-assistant	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 28, 2024 4:27pm

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[github-actions]

Playwright test results

 13 passed
 2 flaky
 1 skipped

Details

 Open report ↗︎
 16 tests across 15 suites
 3 minutes, 19 seconds
 1a2b249

Flaky tests

No persona › tests/modifiy-lesson.test.ts › Modify a lesson plan › Modify a lesson resource
Common persona - mobile › tests/aila-chat/full-romans.mobile.test.ts › Full aila flow with Romans fixture

Skipped tests

No persona › tests/auth.test.ts › authenticate through Clerk UI

[oak-machine-user]

🎉 This PR is included in version 1.17.1 🎉

The release is available on GitHub release

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