Remove frequent log.

The logged condition occurs very frequently (essentially log spam)
and has been ignored for a couple of years. So, logging it as a warning
seems unnecessary.

Bug: none
Change-Id: Ia7163c7a8e9af618685fa5655e90ee85f3cff87b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/247366
Reviewed-by: Johannes Kron <kron@webrtc.org>
Commit-Queue: Johannes Kron <kron@webrtc.org>
Auto-Submit: Tomas Gunnarsson <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#35721}

pc/used_ids.h

@@ -52,8 +52,7 @@ class UsedIds {
 
     if (IsIdUsed(original_id)) {
       new_id = FindUnusedId();
-      RTC_LOG(LS_WARNING) << "Duplicate id found. Reassigning from "
-                          << original_id << " to " << new_id;
+      // Duplicate id found. Reassign from the original id to the new.
       idstruct->id = new_id;
     }
     SetIdUsed(new_id);