Remove Sonic experimental audio codec

Since initially committed in 2004, this codec has only been touched
for maintenanance.  Functionally, it contains no novel ideas and
its intended audience is better served by existing mature codecs.
Signed-off-by: Mans Rullgard <mans@mansr.com>

configure

@@ -1324,9 +1324,6 @@ shorten_decoder_select="golomb"
 sipr_decoder_select="lsp"
 snow_decoder_select="dwt"
 snow_encoder_select="aandct dwt"
-sonic_decoder_select="golomb"
-sonic_encoder_select="golomb"
-sonic_ls_encoder_select="golomb"
 svq1_encoder_select="aandct"
 svq3_decoder_select="golomb h264dsp h264pred"
 svq3_decoder_suggest="zlib"

doc/general.texi

@@ -665,10 +665,6 @@ following image formats are supported:
 @item Sierra VMD audio       @tab     @tab  X
     @tab Used in Sierra VMD files.
 @item Smacker audio          @tab     @tab  X
-@item Sonic                  @tab  X  @tab  X
-    @tab experimental codec
-@item Sonic lossless         @tab  X  @tab  X
-    @tab experimental codec
 @item Speex                  @tab     @tab  E
     @tab supported through external library libspeex
 @item True Audio (TTA)       @tab     @tab  X

libavcodec/Makefile

@@ -337,9 +337,6 @@ OBJS-$(CONFIG_SNOW_ENCODER)            += snow.o rangecoder.o motion_est.o \
                                           ituh263enc.o mpegvideo_enc.o     \
                                           mpeg12data.o
 OBJS-$(CONFIG_SOL_DPCM_DECODER)        += dpcm.o
-OBJS-$(CONFIG_SONIC_DECODER)           += sonic.o
-OBJS-$(CONFIG_SONIC_ENCODER)           += sonic.o
-OBJS-$(CONFIG_SONIC_LS_ENCODER)        += sonic.o
 OBJS-$(CONFIG_SP5X_DECODER)            += sp5xdec.o mjpegdec.o mjpeg.o
 OBJS-$(CONFIG_SRT_DECODER)             += srtdec.o ass.o
 OBJS-$(CONFIG_SUNRAST_DECODER)         += sunrast.o

libavcodec/allcodecs.c

@@ -266,8 +266,6 @@ void avcodec_register_all(void)
     REGISTER_DECODER (SHORTEN, shorten);
     REGISTER_DECODER (SIPR, sipr);
     REGISTER_DECODER (SMACKAUD, smackaud);
-    REGISTER_ENCDEC  (SONIC, sonic);
-    REGISTER_ENCODER (SONIC_LS, sonic_ls);
     REGISTER_DECODER (TRUEHD, truehd);
     REGISTER_DECODER (TRUESPEECH, truespeech);
     REGISTER_DECODER (TTA, tta);