Remove unnecessary overload in RtcEventLogOutput

Bug: webrtc:13579
Change-Id: I3ea4b8ce8d111ae6b9ce7e92f75bd4196bc9656b
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/268420
Reviewed-by: Björn Terelius <terelius@webrtc.org>
Reviewed-by: Tomas Gunnarsson <tommi@webrtc.org>
Commit-Queue: Tomas Gunnarsson <tommi@webrtc.org>
Cr-Commit-Position: refs/heads/main@{#37508}
diff --git a/pc/test/integration_test_helpers.h b/pc/test/integration_test_helpers.h
index f68b96e..82d4bab 100644
--- a/pc/test/integration_test_helpers.h
+++ b/pc/test/integration_test_helpers.h
@@ -28,6 +28,7 @@
 
 #include "absl/algorithm/container.h"
 #include "absl/memory/memory.h"
+#include "absl/strings/string_view.h"
 #include "absl/types/optional.h"
 #include "api/audio_options.h"
 #include "api/call/call_factory_interface.h"
@@ -1250,7 +1251,6 @@
  public:
   virtual ~MockRtcEventLogOutput() = default;
   MOCK_METHOD(bool, IsActive, (), (const, override));
-  MOCK_METHOD(bool, Write, (const std::string&), (override));
   MOCK_METHOD(bool, Write, (absl::string_view), (override));
 };