avcodec: remove duplicate prores decoder

Removed slower one, couldn't figure out why it is slower.
Signed-off-by: Paul B Mahol <onemda@gmail.com>

libavcodec/Makefile

@@ -508,7 +508,6 @@ OBJS-$(CONFIG_PNG_ENCODER)             += png.o pngenc.o
 OBJS-$(CONFIG_PPM_DECODER)             += pnmdec.o pnm.o
 OBJS-$(CONFIG_PPM_ENCODER)             += pnmenc.o
 OBJS-$(CONFIG_PRORES_DECODER)          += proresdec2.o proresdsp.o proresdata.o
-OBJS-$(CONFIG_PRORES_LGPL_DECODER)     += proresdec_lgpl.o proresdsp.o proresdata.o
 OBJS-$(CONFIG_PRORES_ENCODER)          += proresenc_anatoliy.o
 OBJS-$(CONFIG_PRORES_AW_ENCODER)       += proresenc_anatoliy.o
 OBJS-$(CONFIG_PRORES_KS_ENCODER)       += proresenc_kostya.o proresdata.o

libavcodec/allcodecs.c

@@ -234,7 +234,6 @@ extern AVCodec ff_prores_encoder;
 extern AVCodec ff_prores_decoder;
 extern AVCodec ff_prores_aw_encoder;
 extern AVCodec ff_prores_ks_encoder;
-extern AVCodec ff_prores_lgpl_decoder;
 extern AVCodec ff_psd_decoder;
 extern AVCodec ff_ptx_decoder;
 extern AVCodec ff_qdraw_decoder;