Always use FORMAT_BINARY for infile

CLA: trivial

Reviewed-by: Richard Levitte <levitte@openssl.org>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
Reviewed-by: Hugo Landau <hlandau@openssl.org>
(Merged from #19234)

(cherry picked from commit 4689fe1)

apps/mac.c

@@ -170,9 +170,6 @@ int mac_main(int argc, char **argv)
             goto err;
     }
 
-    /* Use text mode for stdin */
-    if (infile == NULL || strcmp(infile, "-") == 0)
-        inform = FORMAT_TEXT;
     in = bio_open_default(infile, 'r', inform);
     if (in == NULL)
         goto err;