test/img_format: remove dead code

test/img_format.c

@@ -10,9 +10,6 @@
 #include "video/mp_image.h"
 #include "video/sws_utils.h"
 
-static enum AVPixelFormat pixfmt_unsup[100];
-static int num_pixfmt_unsup;
-
 static const char *comp_type(enum mp_component_type type)
 {
     switch (type) {
@@ -218,11 +215,6 @@ int main(int argc, char *argv[])
         }
     }
 
-    for (int z = 0; z < num_pixfmt_unsup; z++) {
-        const AVPixFmtDescriptor *avd = av_pix_fmt_desc_get(pixfmt_unsup[z]);
-        fprintf(f, "Unsupported: %s\n", avd->name);
-    }
-
     fclose(f);
 
     assert_text_files_equal(refdir, outdir, "img_formats.txt",