src: remove no longer relevant comments

PR-URL: https://github.com/nodejs/node/pull/4843
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Fedor Indutny <fedor@indutny.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Roman Reiss <me@silverwind.io>

src/debug-agent.cc

@@ -285,7 +285,6 @@ void Agent::ChildSignalCb(uv_async_t* signal) {
     }
 
     // Waiting for client, do not send anything just yet
-    // TODO(indutny): move this to js-land
     if (a->wait_) {
       a->messages_.PushFront(msg);  // Push message back into the ready queue.
       break;

src/debug-agent.h

@@ -109,7 +109,6 @@ class Agent {
     kRunning
   };
 
-  // TODO(indutny): Verify that there are no races
   State state_;
 
   int port_;

src/node_crypto.cc

@@ -5177,7 +5177,7 @@ void PBKDF2(const FunctionCallbackInfo<Value>& args) {
 
   if (args[5]->IsFunction()) {
     obj->Set(env->ondone_string(), args[5]);
-    // XXX(trevnorris): This will need to go with the rest of domains.
+
     if (env->in_domain())
       obj->Set(env->domain_string(), env->domain_array()->Get(0));
     uv_queue_work(env->event_loop(),
@@ -5338,7 +5338,7 @@ void RandomBytes(const FunctionCallbackInfo<Value>& args) {
 
   if (args[1]->IsFunction()) {
     obj->Set(FIXED_ONE_BYTE_STRING(args.GetIsolate(), "ondone"), args[1]);
-    // XXX(trevnorris): This will need to go with the rest of domains.
+
     if (env->in_domain())
       obj->Set(env->domain_string(), env->domain_array()->Get(0));
     uv_queue_work(env->event_loop(),