Remove lowres support from wmv2 decoder

lowres option crashes with wmv2 files which I have for test,
so I think it's better to remove the support to the time when
lowres will be really supported by this codec
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/wmv2dec.c

@@ -480,7 +480,6 @@ AVCodec ff_wmv2_decoder = {
     wmv2_decode_end,
     ff_h263_decode_frame,
     CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1,
-    .max_lowres = 3,
     .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 8"),
     .pix_fmts= ff_pixfmt_list_420,
 };