fix mcp docs (#1129)

Author: michi-okahata

docs/v2/usage/mcp-server.mdx

@@ -60,11 +60,6 @@ Authorize using an AgentOps project API key.
 - **Parameters**: `api_key` (string) - Your AgentOps project API key
 - **Usage**: The server will automatically prompt for authentication when needed
 
-#### `get_project`
-Get details about the current project.
-- **Parameters**: None
-- **Returns**: Project information including ID, name, and environment
-
 #### `get_trace`
 Get trace information by ID.
 - **Parameters**: `trace_id` (string) - The trace identifier