Remove H.264 encoder fragments

It's incomplete, no one is working on it, and when someone asks about
working on it we advise them not to.
Signed-off-by: Mans Rullgard <mans@mansr.com>

libavcodec/Makefile

@@ -167,7 +167,6 @@ OBJS-$(CONFIG_H264_DECODER)            += h264.o                               \
                                           h264_refs.o h264_cavlc.o h264_cabac.o\
                                           mpegvideo.o error_resilience.o
 OBJS-$(CONFIG_H264_DXVA2_HWACCEL)      += dxva2_h264.o
-OBJS-$(CONFIG_H264_ENCODER)            += h264enc.o h264dspenc.o
 OBJS-$(CONFIG_H264_VAAPI_HWACCEL)      += vaapi_h264.o
 OBJS-$(CONFIG_HUFFYUV_DECODER)         += huffyuv.o
 OBJS-$(CONFIG_HUFFYUV_ENCODER)         += huffyuv.o

libavcodec/h264.c

 /*
- * H.26L/H.264/AVC/JVT/14496-10/... encoder/decoder
+ * H.26L/H.264/AVC/JVT/14496-10/... decoder
  * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at>
  *
  * This file is part of FFmpeg.

libavcodec/h264dspenc.c

-/*
- * H.264/MPEG-4 Part 10 (Base profile) encoder.
- *
- * DSP functions
- *
- * Copyright (c) 2006 Expertisecentrum Digitale Media, UHasselt
- *
- * FFmpeg is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2.1 of the License, or (at your option) any later version.
- *
- * FFmpeg is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with FFmpeg; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
- */
-
-/**
- * @file
- * H.264 encoder related DSP utils
- *
- */
-
-#include "dsputil.h"
-
-#define  H264_DCT_PART1(X) \
-         a = block[0][X]+block[3][X]; \
-         c = block[0][X]-block[3][X]; \
-         b = block[1][X]+block[2][X]; \
-         d = block[1][X]-block[2][X]; \
-         pieces[0][X] = a+b; \
-         pieces[2][X] = a-b; \
-         pieces[1][X] = (c<<1)+d; \
-         pieces[3][X] = c-(d<<1);
-
-#define  H264_DCT_PART2(X) \
-         a = pieces[X][0]+pieces[X][3]; \
-         c = pieces[X][0]-pieces[X][3]; \
-         b = pieces[X][1]+pieces[X][2]; \
-         d = pieces[X][1]-pieces[X][2]; \
-         block[0][X] = a+b; \
-         block[2][X] = a-b; \
-         block[1][X] = (c<<1)+d; \
-         block[3][X] = c-(d<<1);
-
-/**
- * Transform the provided matrix using the H.264 modified DCT.
- * @note
- * we'll always work with transposed input blocks, to avoid having to make a
- * distinction between C and mmx implementations.
- *
- * @param block transposed input block
- */
-static void h264_dct_c(DCTELEM block[4][4])
-{
-    DCTELEM pieces[4][4];
-    DCTELEM a, b, c, d;
-
-    H264_DCT_PART1(0);
-    H264_DCT_PART1(1);
-    H264_DCT_PART1(2);
-    H264_DCT_PART1(3);
-    H264_DCT_PART2(0);
-    H264_DCT_PART2(1);
-    H264_DCT_PART2(2);
-    H264_DCT_PART2(3);
-}
-
-av_cold void ff_h264dspenc_init(DSPContext* c, AVCodecContext *avctx)
-{
-    c->h264_dct = h264_dct_c;
-}
-