Remove unused functions, fixes the warnings:

snow.c:1163: warning: 'spatial_compose53i' defined but not used
snow.c:1313: warning: 'spatial_compose97i' defined but not used

Originally committed as revision 11048 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/snow.c

@@ -1160,13 +1160,6 @@ STOP_TIMER("horizontal_compose53i")}
     cs->y += 2;
 }
 
-static void spatial_compose53i(IDWTELEM *buffer, int width, int height, int stride){
-    dwt_compose_t cs;
-    spatial_compose53i_init(&cs, buffer, height, stride);
-    while(cs.y <= height)
-        spatial_compose53i_dy(&cs, buffer, width, height, stride);
-}
-
 
 void ff_snow_horizontal_compose97i(IDWTELEM *b, int width){
     IDWTELEM temp[width];
@@ -1310,13 +1303,6 @@ STOP_TIMER("horizontal_compose97i")}}
     cs->y += 2;
 }
 
-static void spatial_compose97i(IDWTELEM *buffer, int width, int height, int stride){
-    dwt_compose_t cs;
-    spatial_compose97i_init(&cs, buffer, height, stride);
-    while(cs.y <= height)
-        spatial_compose97i_dy(&cs, buffer, width, height, stride);
-}
-
 static void ff_spatial_idwt_buffered_init(dwt_compose_t *cs, slice_buffer * sb, int width, int height, int stride_line, int type, int decomposition_count){
     int level;
     for(level=decomposition_count-1; level>=0; level--){