Revert "elf-loader: warn about invalid endianness"

This reverts c8e1158cf611 "elf-loader: warn about invalid endianness"
as it produces a useless message every time an LE kernel image is
passed via -kernel on a ppc64-pseries machine. The pseries machine
already checks for ELF_LOAD_WRONG_ENDIAN and tries with big_endian=0.

Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Yongbok Kim <yongbok.kim@imgtec.com>

hw/core/loader.c

@@ -480,7 +480,6 @@ int load_elf_ram(const char *filename,
     }
 
     if (target_data_order != e_ident[EI_DATA]) {
-        fprintf(stderr, "%s: wrong endianness\n", filename);
         ret = ELF_LOAD_WRONG_ENDIAN;
         goto fail;
     }