j2kdec: Remove useless .pix_fmts.

Signed-off-by: Paul B Mahol <onemda@gmail.com>
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/j2kdec.c

@@ -1098,6 +1098,4 @@ AVCodec ff_jpeg2000_decoder = {
     .decode         = decode_frame,
     .capabilities = CODEC_CAP_EXPERIMENTAL,
     .long_name = NULL_IF_CONFIG_SMALL("JPEG 2000"),
-    .pix_fmts =
-        (const enum PixelFormat[]) {PIX_FMT_GRAY8, PIX_FMT_RGB24, PIX_FMT_NONE}
 };