Fix request handler E2E comment

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: SteveSandersonMS

nodejs/test/e2e/copilot_request_handler.e2e.test.ts

@@ -184,7 +184,6 @@ function buildResponsesEvents(text: string, id: string): Array<Record<string, un
     ];
 }
 
-/**
 interface Counters {
     httpRequests: number;
     httpResponses: number;