Remove the duplicated tutorial

[nithishr]

[DA-1177]: Remove duplicated langgraph tutorial

[gemini-code-assist]

Summary of Changes

Hello @nithishr, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on maintaining the quality and conciseness of our documentation by removing a tutorial that was identified as a duplicate. This action helps streamline content, ensuring that users encounter only the most relevant and up-to-date information without redundancy.

Highlights

• Tutorial Removal: The tutorial located at "tutorial/markdown/generated/vector-search-cookbook/couchbase_presistence_langgraph.md", which detailed LangGraph persistence with Couchbase, has been removed.

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[gemini-code-assist]

Code Review

This pull request removes a duplicated tutorial file, couchbase_presistence_langgraph.md, which appears to have been created with a typo in its name. The correctly named file, couchbase_persistence_langgraph.md, remains. This is a good cleanup change that improves the repository's structure. The change is correct and I have no further feedback.