docs: fix accidental nav bar change (#2865)

docs/mkdocs.yml

@@ -89,7 +89,6 @@ plugins:
             options:
               filters:
                 - "!^_"
-
 nav:
   - Home: index.md
   - Tutorials:
@@ -150,46 +149,6 @@ nav:
           - tutorials/auth/resource_auth.md
           - tutorials/auth/add_auth_server.md
 
-  - Conceptual Guides:
-      - concepts/index.md
-      - LangGraph:
-        - LangGraph: concepts#langgraph
-        - concepts/high_level.md
-        - concepts/low_level.md
-        - concepts/agentic_concepts.md
-        - concepts/multi_agent.md
-        - concepts/human_in_the_loop.md
-        - concepts/persistence.md
-        - concepts/memory.md
-        - concepts/streaming.md
-        - concepts/faq.md
-      - LangGraph Platform:
-        - LangGraph Platform: concepts#langgraph-platform
-        - High Level:
-          - High Level: concepts#high-level
-          - concepts/langgraph_platform.md
-          - concepts/deployment_options.md
-          - concepts/plans.md
-          - concepts/template_applications.md
-        - Components:
-          - Components: concepts#components
-          - concepts/langgraph_server.md
-          - concepts/langgraph_studio.md
-          - concepts/langgraph_cli.md
-          - concepts/sdk.md
-          - how-tos/use-remote-graph.md
-        - LangGraph Server:
-          - LangGraph Server: concepts#langgraph-server
-          - concepts/application_structure.md
-          - concepts/assistants.md
-          - concepts/double_texting.md
-        - Deployment Options:
-          - Deployment Options: concepts#deployment-options
-          - concepts/self_hosted.md
-          - concepts/langgraph_cloud.md
-          - concepts/bring_your_own_cloud.md
-
-
   - How-to Guides:
       - how-tos/index.md
       - LangGraph: