Remove sstream code from socket_address

Bug: webrtc:8982
Change-Id: I85f1678aa02a51ddad083fb299577cfa5d364df8
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/355905
Commit-Queue: Mirko Bonadei <mbonadei@webrtc.org>
Auto-Submit: Tomas Gunnarsson <tommi@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#42570}
diff --git a/rtc_base/socket_address.h b/rtc_base/socket_address.h
index b58a6db..787bf38 100644
--- a/rtc_base/socket_address.h
+++ b/rtc_base/socket_address.h
@@ -14,9 +14,6 @@
 #include <string>
 
 #include "absl/strings/string_view.h"
-#ifdef WEBRTC_UNIT_TEST
-#include <ostream>  // no-presubmit-check TODO(webrtc:8982)
-#endif              // WEBRTC_UNIT_TEST
 #include "rtc_base/ip_address.h"
 #include "rtc_base/system/rtc_export.h"
 
@@ -133,13 +130,6 @@
   // Parses hostname:port and [hostname]:port.
   bool FromString(absl::string_view str);
 
-#ifdef WEBRTC_UNIT_TEST
-  inline std::ostream& operator<<(  // no-presubmit-check TODO(webrtc:8982)
-      std::ostream& os) {           // no-presubmit-check TODO(webrtc:8982)
-    return os << HostAsURIString() << ":" << port();
-  }
-#endif  // WEBRTC_UNIT_TEST
-
   // Determines whether this represents a missing / any IP address.
   // That is, 0.0.0.0 or ::.
   // Hostname and/or port may be set.