libs: h265dec: remove limitation of get iq matrix

According hevc spec, scaling_list_data is not related
to chroma_format_idc.

gst-libs/gst/vaapi/gstvaapidecoder_h265.c

@@ -1296,10 +1296,6 @@ ensure_quant_matrix (GstVaapiDecoderH265 * decoder,
   }
   iq_matrix = base_picture->iq_matrix->param;
 
-  /* Only supporting 4:2:0 */
-  if (sps->chroma_format_idc != 1)
-    return GST_VAAPI_DECODER_STATUS_ERROR_UNSUPPORTED_CHROMA_FORMAT;
-
   fill_iq_matrix_4x4 (iq_matrix, scaling_list);
   fill_iq_matrix_8x8 (iq_matrix, scaling_list);
   fill_iq_matrix_16x16 (iq_matrix, scaling_list);