Remove VertexAIError related entries from TOC

[dlarocque]

These entries were introduced when the toc.yaml was first added to the repository here: #8257

The uploaded file was generated in the vertexaierror branch (not merged). Since it wasn't tracked by Git, we weren't able to notice that there were new entries. This shouldn't happen again now that we have the checks in place.

Note: The changes being removed here haven't been uploaded to devsite, so the change is only on GitHub

[changeset-bot]

⚠️ No Changeset found

Latest commit: c473407

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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[google-oss-bot]

Size Report ¹

Affected Products

No changes between base commit (436331a) and merge commit (1b381c8).

Test Logs

• Base (436331a): https://github.com/firebase/firebase-js-sdk/actions/runs/9374564978
• Merge (1b381c8): https://github.com/firebase/firebase-js-sdk/actions/runs/9390198353

1. https://storage.googleapis.com/firebase-sdk-metric-reports/CRu7pZLV8Y.html

[google-oss-bot]

Size Analysis Report ¹

Affected Products

No changes between base commit (436331a) and merge commit (1b381c8).

Test Logs

• Base (436331a): https://github.com/firebase/firebase-js-sdk/actions/runs/9374564978
• Merge (1b381c8): https://github.com/firebase/firebase-js-sdk/actions/runs/9390198353

1. https://storage.googleapis.com/firebase-sdk-metric-reports/gVCYh4Ocfq.html

[egilmorez]

Change LG, just let's make sure Rachel reviews any CL submitting this to the live site, thanks!