[router] remove old/oudated/useless comments across code base (#10968)

sgl-router/src/mcp/client_manager.rs

@@ -288,8 +288,6 @@ impl McpClientManager {
         }
     }
 
-    // ===== Helpers =====
-
     fn client_for(&self, server_name: &str) -> McpResult<&RunningService<RoleClient, ()>> {
         self.clients
             .get(server_name)
@@ -317,8 +315,6 @@ impl McpClientManager {
             .ok_or_else(|| McpError::ResourceNotFound(uri.to_string()))
     }
 
-    // ===== Tool Methods =====
-
     /// Call a tool by name
     pub async fn call_tool(
         &self,
@@ -380,8 +376,6 @@ impl McpClientManager {
         self.clients.keys().cloned().collect()
     }
 
-    // ===== Prompt Methods =====
-
     /// Get a prompt by name with arguments
     pub async fn get_prompt(
         &self,
@@ -439,8 +433,6 @@ impl McpClientManager {
         })
     }
 
-    // ===== Resource Methods =====
-
     /// Read a resource by URI
     pub async fn read_resource(&self, uri: &str) -> McpResult<ReadResourceResult> {
         let (server_name, _resource) = self.resource_entry(uri)?;