remove includes for duplicate functions

include/libyuv/convert_from.h

 /*
  *  Copyright 2011 The LibYuv Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS. All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
@@ skipping 38 matching lines @@
                uint8* dst_u, int dst_stride_u,
                uint8* dst_v, int dst_stride_v,
                int width, int height);
 
 // Copy to I400. Source can be I420, I422, I444, I400, NV12 or NV21.
 LIBYUV_API
 int I400Copy(const uint8* src_y, int src_stride_y,
              uint8* dst_y, int dst_stride_y,
              int width, int height);
 
-// TODO(fbarchard): I420ToM420
-
 LIBYUV_API
 int I420ToNV12(const uint8* src_y, int src_stride_y,
                const uint8* src_u, int src_stride_u,
                const uint8* src_v, int src_stride_v,
                uint8* dst_y, int dst_stride_y,
                uint8* dst_uv, int dst_stride_uv,
                int width, int height);
 
 LIBYUV_API
 int I420ToNV21(const uint8* src_y, int src_stride_y,
@@ skipping 101 matching lines @@
                     uint8* dst_sample, int dst_sample_stride,
                     int width, int height,
                     uint32 format);
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif
 
 #endif  // INCLUDE_LIBYUV_CONVERT_FROM_H_  NOLINT