Remove outdated comments

Summary:
# Changelog: [Internal]

Tracing is stable.

Differential Revision: D85996397

Author: hoxyq

packages/react-native/ReactCommon/jsinspector-modern/TracingAgent.cpp

@@ -53,7 +53,6 @@ TracingAgent::~TracingAgent() {
 
 bool TracingAgent::handleRequest(const cdp::PreparsedRequest& req) {
   if (req.method == "Tracing.start") {
-    // @cdp Tracing.start support is experimental.
     if (sessionState_.isDebuggerDomainEnabled) {
       frontendChannel_(
           cdp::jsonError(
@@ -81,7 +80,6 @@ bool TracingAgent::handleRequest(const cdp::PreparsedRequest& req) {
 
     return true;
   } else if (req.method == "Tracing.end") {
-    // @cdp Tracing.end support is experimental.
     auto state = hostTargetController_.stopTracing();
 
     sessionState_.hasPendingTraceRecording = false;