docs(gcs): remove note that multi object delete is not supported

[alexfrancoeur]

Summary

XML Multi Object Delete is now GA for GCS, so the note stating that GCS doesn't support batch deletes is out of date and has been removed.

Reference: https://docs.cloud.google.com/storage/docs/xml-api/post-bucket

This re-submits the change from #6048

Checklist

• Delete items not relevant to your PR
• URL changes should add a redirect to the old URL via https://github.com/ClickHouse/clickhouse-docs/blob/main/docusaurus.config.js
• If adding a new integration page, also add an entry to the integrations list here: https://github.com/ClickHouse/clickhouse-docs/blob/main/docs/integrations/index.mdx

🤖 Generated with Claude Code

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Note

Low Risk
Documentation-only change to example XML and prose; no runtime or configuration code is modified.

Overview
Updates the GCS-backed MergeTree integration guide to match XML Multi-Object Delete being generally available on Google Cloud Storage.

All sample disk configs in docs/integrations/data-ingestion/gcs/index.md now set support_batch_delete to true instead of false, and the outdated explanation that GCS does not support batch deletes (and that autodetect should be disabled to avoid errors) is removed.

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[zk-gt]

<support_batch_delete> value should be updated to true

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Project	Deployment	Actions	Updated (UTC)
clickhouse-docs	Ready	Preview	Jun 4, 2026 8:48pm