Revert "Add Tile-SB-Row based Multi-threading in Decoder"

This reverts commit 02b3ef7faee5be5ee519856fbb3523d3ab49f6e7.

Reason for revert: fails to build under visual studio

Original change's description:
> Add Tile-SB-Row based Multi-threading in Decoder
>
> Add the multi-thread function that decodes a video row by row instead
> of a tile at a time. Create a job queue for queueing all parse and recon jobs.
> Each SB row of a tile is a job.
>
> Performance Improvement:
>
> Platform        Resolution      3 Threads       4 Threads
> ARM             720p            36.81%          18.37%
>                 1080p           32.27%          14.76%
>
> ARM Improvement measured on Nexus 6 Snapdragon 805 Quad-core  @ 2.65 GHz
>
> Change-Id: I3d4dd7a932fc2904c90d9546b2de99c809afd29e

BUG=webm:1587

Change-Id: Ia4c8f5128922a205cd9fd83aaef8a2e73764d4a7

1 files changed, 0 insertions, 45 deletions

diff --git a/vp9/decoder/vp9_job_queue.h b/vp9/decoder/vp9_job_queue.h
deleted file mode 100644
index bc23bf9c2..000000000
--- a/vp9/decoder/vp9_job_queue.h
+++ /dev/null
@@ -1,45 +0,0 @@
-/*
- *  Copyright (c) 2018 The WebM 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.
- */
-
-#ifndef VPX_VP9_DECODER_VP9_JOB_QUEUE_H_
-#define VPX_VP9_DECODER_VP9_JOB_QUEUE_H_
-
-#include "vpx_util/vpx_thread.h"
-
-typedef struct {
-  // Pointer to buffer base which contains the jobs
-  uint8_t *buf_base;
-
-  // Pointer to current address where new job can be added
-  uint8_t *volatile buf_wr;
-
-  // Pointer to current address from where next job can be obtained
-  uint8_t *volatile buf_rd;
-
-  // Pointer to end of job buffer
-  uint8_t *buf_end;
-
-  int terminate;
-
-#if CONFIG_MULTITHREAD
-  pthread_mutex_t mutex;
-  pthread_cond_t cond;
-#endif
-} JobQueueRowMt;
-
-void vp9_jobq_init(JobQueueRowMt *jobq, uint8_t *buf, size_t buf_size);
-void vp9_jobq_reset(JobQueueRowMt *jobq);
-void vp9_jobq_deinit(JobQueueRowMt *jobq);
-void vp9_jobq_terminate(JobQueueRowMt *jobq);
-int vp9_jobq_queue(JobQueueRowMt *jobq, void *job, size_t job_size);
-int vp9_jobq_dequeue(JobQueueRowMt *jobq, void *job, size_t job_size,
-                     int blocking);
-
-#endif  // VPX_VP9_DECODER_VP9_JOB_QUEUE_H_