dsputil: remove ff_emulated_edge_mc macro used in one place

This macro can cause problems in conjunction with the bitdepth
template expansion.  It was presumably added to keep source
compatibility when high bitdepth support was added.  However,
emulated_edge_mc is a dsputil pointer and should not be called
directly, so there is little reason to keep such a macro.
Signed-off-by: Mans Rullgard <mans@mansr.com>

libavcodec/dsputil.h

@@ -211,8 +211,6 @@ EMULATED_EDGE(8)
 EMULATED_EDGE(9)
 EMULATED_EDGE(10)
 
-#define ff_emulated_edge_mc ff_emulated_edge_mc_8
-
 void ff_add_pixels_clamped_c(const DCTELEM *block, uint8_t *dest, int linesize);
 void ff_put_pixels_clamped_c(const DCTELEM *block, uint8_t *dest, int linesize);
 void ff_put_signed_pixels_clamped_c(const DCTELEM *block, uint8_t *dest, int linesize);

libavcodec/x86/dsputil_mmx.c

@@ -1879,7 +1879,7 @@ static void gmc_mmx(uint8_t *dst, uint8_t *src, int stride, int h, int ox, int o
                     int dxx, int dxy, int dyx, int dyy, int shift, int r, int width, int height)
 {
     gmc(dst, src, stride, h, ox, oy, dxx, dxy, dyx, dyy, shift, r,
-        width, height, &ff_emulated_edge_mc);
+        width, height, &ff_emulated_edge_mc_8);
 }
 #endif