remove summary

Author: kenhuuu

docs/src/dev/transactions/http-api-spec.md

@@ -127,19 +127,3 @@ Response: 500 Internal Server Error
 - **Generation**: Server-generated on `POST /gremlin/tx`
 - **Usage**: Included in all subsequent requests as URL path parameter
 - **Purpose**: Routes requests to correct transaction context on server
-
-## Endpoint Summary Diagram
-
-```mermaid
-flowchart TD
-    A[Client] -->|POST /gremlin| B[Non-Transactional Execution]
-    A -->|POST /gremlin/tx| C[Begin Transaction]
-    C -->|Returns txId| D[Transaction Active]
-    D -->|POST /gremlin/tx/{txId}| E[Execute in Transaction]
-    D -->|GET /gremlin/tx/{txId}| F[Get Status]
-    D -->|POST /gremlin/tx/{txId}/commit| G[Commit]
-    D -->|POST /gremlin/tx/{txId}/rollback| H[Rollback]
-    D -->|DELETE /gremlin/tx/{txId}| H
-    G --> I[Transaction Committed]
-    H --> J[Transaction Rolled Back]
-```