[AEC3] Remove unused GetConfiguration from NeuralResidualEchoEstimator This method was not used anywhere in the codebase and its removal simplifies the interface. Bug: webrtc:442444736 No-Iwyu: Not changing the tflite includes. Change-Id: I0d98b9e636eea8b1b0e05dc8d1e4667c7357fa38 Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/464022 Reviewed-by: Sam Zackrisson <saza@webrtc.org> Commit-Queue: Jesus de Vicente Pena <devicentepena@webrtc.org> Cr-Commit-Position: refs/heads/main@{#47423}

diff --git a/api/audio/neural_residual_echo_estimator.h b/api/audio/neural_residual_echo_estimator.h
index 974bc67..03da2f1 100644
--- a/api/audio/neural_residual_echo_estimator.h
+++ b/api/audio/neural_residual_echo_estimator.h

@@ -54,9 +54,6 @@
                         std::span<std::array<float, 65>> R2,
                         std::span<std::array<float, 65>> R2_unbounded) = 0;
 
-  // Returns a recommended AEC3 configuration for this estimator.
-  virtual EchoCanceller3Config GetConfiguration(bool multi_channel) const = 0;
-
   // Adjusts the provided AEC3 suppressor configuration based on the estimator's
   // requirements.
   virtual EchoCanceller3Config::Suppressor AdjustConfig(

diff --git a/modules/audio_processing/aec3/echo_canceller3_unittest.cc b/modules/audio_processing/aec3/echo_canceller3_unittest.cc
index a27b3e8..0f22c1e 100644
--- a/modules/audio_processing/aec3/echo_canceller3_unittest.cc
+++ b/modules/audio_processing/aec3/echo_canceller3_unittest.cc

@@ -1191,10 +1191,6 @@
       return residual_echo_estimate_requested_;
     }
 
-    EchoCanceller3Config GetConfiguration(bool multi_channel) const override {
-      return EchoCanceller3Config();
-    }
-
     EchoCanceller3Config::Suppressor AdjustConfig(
         const EchoCanceller3Config::Suppressor& config) const override {
       return config;

diff --git a/modules/audio_processing/aec3/neural_residual_echo_estimator/neural_residual_echo_estimator_impl.cc b/modules/audio_processing/aec3/neural_residual_echo_estimator/neural_residual_echo_estimator_impl.cc
index a18f1e5..88d6b05 100644
--- a/modules/audio_processing/aec3/neural_residual_echo_estimator/neural_residual_echo_estimator_impl.cc
+++ b/modules/audio_processing/aec3/neural_residual_echo_estimator/neural_residual_echo_estimator_impl.cc

@@ -566,14 +566,6 @@
   }
 }
 
-EchoCanceller3Config NeuralResidualEchoEstimatorImpl::GetConfiguration(
-    bool multi_channel) const {
-  EchoCanceller3Config config;
-  config.suppressor = AdjustConfig(config.suppressor);
-  config.filter.enable_coarse_filter_output_usage = false;
-  return config;
-}
-
 EchoCanceller3Config::Suppressor NeuralResidualEchoEstimatorImpl::AdjustConfig(
     const EchoCanceller3Config::Suppressor& suppressor_config) const {
   EchoCanceller3Config::Suppressor adjusted_suppressor_config =

diff --git a/modules/audio_processing/aec3/neural_residual_echo_estimator/neural_residual_echo_estimator_impl.h b/modules/audio_processing/aec3/neural_residual_echo_estimator/neural_residual_echo_estimator_impl.h
index f92358e..e72629e 100644
--- a/modules/audio_processing/aec3/neural_residual_echo_estimator/neural_residual_echo_estimator_impl.h
+++ b/modules/audio_processing/aec3/neural_residual_echo_estimator/neural_residual_echo_estimator_impl.h

@@ -80,7 +80,6 @@
       std::span<std::array<float, kFftLengthBy2Plus1>> R2,
       std::span<std::array<float, kFftLengthBy2Plus1>> R2_unbounded) override;
 
-  EchoCanceller3Config GetConfiguration(bool multi_channel) const override;
   EchoCanceller3Config::Suppressor AdjustConfig(
       const EchoCanceller3Config::Suppressor& config) const override;