lavc/libxavs2: Remove yuv420p10le from fromat list.

now libxavs2 can't support 10bits mode, so remove the
yuv420p10le from fromat list.
Signed-off-by: Jun Zhao <jun.zhao@intel.com>

libavcodec/libxavs2.c

@@ -286,7 +286,8 @@ AVCodec ff_libxavs2_encoder = {
     .encode2        = xavs2_encode_frame,
     .close          = xavs2_close,
     .capabilities   = AV_CODEC_CAP_DELAY | AV_CODEC_CAP_AUTO_THREADS,
-    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV420P10, AV_PIX_FMT_NONE },
+    .pix_fmts       = (const enum AVPixelFormat[]) { AV_PIX_FMT_YUV420P,
+                                                     AV_PIX_FMT_NONE },
     .priv_class     = &libxavs2,
     .defaults       = xavs2_defaults,
     .wrapper_name   = "libxavs2",