sgi encoder does not support pal8

git-svn-id: file:///var/local/repositories/ffmpeg/trunk@18791 9553f0bf-9b14-0410-a0b8-cfaf0461ba5b

libavcodec/sgienc.c

@@ -151,7 +151,7 @@ AVCodec sgi_encoder = {
     encode_init,
     encode_frame,
     NULL,
-    .pix_fmts= (enum PixelFormat[]){PIX_FMT_RGB24, PIX_FMT_RGBA, PIX_FMT_PAL8, PIX_FMT_GRAY8, PIX_FMT_NONE},
+    .pix_fmts= (enum PixelFormat[]){PIX_FMT_RGB24, PIX_FMT_RGBA, PIX_FMT_GRAY8, PIX_FMT_NONE},
     .long_name= NULL_IF_CONFIG_SMALL("SGI image"),
 };