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diff --git a/cras/src/server/rust/src/headers/rate_estimator.h b/cras/src/server/rust/src/headers/rate_estimator.h
deleted file mode 100644
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--- a/cras/src/server/rust/src/headers/rate_estimator.h
+++ /dev/null
@@ -1,85 +0,0 @@
-// Copyright 2019 The Chromium OS Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-// Generated from files in cras/src/server/rust/src in adhd.
-
-#ifndef RATE_ESTIMATOR_H_
-#define RATE_ESTIMATOR_H_
-
-#include <time.h>
-
-/**
- * An estimator holding the required information to determine the actual frame
- * rate of an audio device.
- *
- * # Members
- *    * `last_level` - Buffer level of the audio device at last check time.
- *    * `level_diff` - Number of frames written to or read from audio device
- *                     since the last check time. Rate estimator will use this
- *                     change plus the difference of buffer level to derive the
- *                     number of frames audio device has actually processed.
- *    * `window_start` - The start time of the current window.
- *    * `window_size` - The size of the window.
- *    * `window_frames` - The number of frames accumulated in current window.
- *    * `lsq` - The helper used to estimate sample rate.
- *    * `smooth_factor` - A scaling factor used to average the previous and new
- *                        rate estimates to ensure that estimates do not change
- *                        too quickly.
- *    * `estimated_rate` - The estimated rate at which samples are consumed.
- */
-typedef struct rate_estimator rate_estimator;
-
-/**
- * # Safety
- *
- * To use this function safely, `re` must be a pointer returned from
- * rate_estimator_create, or null.
- */
-void rate_estimator_add_frames(rate_estimator *re, int frames);
-
-/**
- * # Safety
- *
- * To use this function safely, `re` must be a pointer returned from
- * rate_estimator_create, or null, and `now` must be a valid pointer to a
- * timespec.
- */
-int32_t rate_estimator_check(rate_estimator *re, int level,
-			     const struct timespec *now);
-
-/**
- * # Safety
- *
- * To use this function safely, `window_size` must be a valid pointer to a
- * timespec.
- */
-rate_estimator *rate_estimator_create(unsigned int rate,
-				      const struct timespec *window_size,
-				      double smooth_factor);
-
-/**
- * # Safety
- *
- * To use this function safely, `re` must be a pointer returned from
- * rate_estimator_create, or null.
- */
-void rate_estimator_destroy(rate_estimator *re);
-
-/**
- * # Safety
- *
- * To use this function safely, `re` must be a pointer returned from
- * rate_estimator_create, or null.
- */
-double rate_estimator_get_rate(const rate_estimator *re);
-
-/**
- * # Safety
- *
- * To use this function safely, `re` must be a pointer returned from
- * rate_estimator_create, or null.
- */
-void rate_estimator_reset_rate(rate_estimator *re, unsigned int rate);
-
-#endif /* RATE_ESTIMATOR_H_ */