avcodec/vdpau: Remove CONFIG_H263_VDPAU_HWACCEL

Fixes: libavcodec/vdpau.c:320:5: warning: "CONFIG_H263_VDPAU_HWACCEL" is not defined [-Wundef]

It was removed in d15adeacSigned-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/vdpau.c

@@ -317,7 +317,7 @@ FF_ENABLE_DEPRECATION_WARNINGS
     return vdpau_error(status);
 }
 
-#if CONFIG_H263_VDPAU_HWACCEL  || CONFIG_MPEG1_VDPAU_HWACCEL || \
+#if CONFIG_MPEG1_VDPAU_HWACCEL || \
     CONFIG_MPEG2_VDPAU_HWACCEL || CONFIG_MPEG4_VDPAU_HWACCEL || \
     CONFIG_VC1_VDPAU_HWACCEL   || CONFIG_WMV3_VDPAU_HWACCEL
 int ff_vdpau_mpeg_end_frame(AVCodecContext *avctx)