avcodec/tiff: Support uncompressed G3 CCITT fax

Fixes part of Ticket700
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>

libavcodec/tiff.c

@@ -460,11 +460,7 @@ static int tiff_unpack_fax(TiffContext *s, uint8_t *dst, int stride,
                "Error allocating temporary buffer\n");
         return AVERROR(ENOMEM);
     }
-    if ((s->fax_opts & 2) && s->compr == TIFF_G3) {
-        avpriv_request_sample(s->avctx, "Uncompressed fax mode");
-        av_free(src2);
-        return AVERROR_PATCHWELCOME;
-    }
+
     if (!s->fill_order) {
         memcpy(src2, src, size);
     } else {