Remove OverUseDetectorOptions from OveruseDetector since it isn't used.

webrtc/modules/remote_bitrate_estimator/overuse_detector.h

Index: webrtc/modules/remote_bitrate_estimator/overuse_detector.h
diff --git a/webrtc/modules/remote_bitrate_estimator/overuse_detector.h b/webrtc/modules/remote_bitrate_estimator/overuse_detector.h
index ce61e3b4d9a8c7d9bd40411e22ff354336f95071..03ddb1ee6a3a77a6249eae0a38f8a4977aa99b78 100644
--- a/webrtc/modules/remote_bitrate_estimator/overuse_detector.h
+++ b/webrtc/modules/remote_bitrate_estimator/overuse_detector.h
@@ -24,7 +24,7 @@ bool AdaptiveThresholdExperimentIsDisabled();
 
 class OveruseDetector {
  public:
-  explicit OveruseDetector(const OverUseDetectorOptions& options);
+  OveruseDetector();
   virtual ~OveruseDetector();
 
   // Update the detection state based on the estimated inter-arrival time delta
@@ -49,9 +49,6 @@ class OveruseDetector {
   double k_up_;
   double k_down_;
   double overusing_time_threshold_;
-  // Must be first member variable. Cannot be const because we need to be
-  // copyable.
-  webrtc::OverUseDetectorOptions options_;
   double threshold_;
   int64_t last_update_ms_;
   double prev_offset_;