selftests: vDSO: vdso_test_gettimeofday: Clean up includes

Some unnecessary headers are included, remove them.

Signed-off-by: Thomas Weißschuh <thomas.weissschuh@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Reviewed-by: Vincenzo Frascino <vincenzo.frascino@arm.com>
Acked-by: Shuah Khan <skhan@linuxfoundation.org>
Link: https://lore.kernel.org/all/20250226-parse_vdso-nolibc-v2-14-28e14e031ed8@linutronix.de

Author: t-8ch

tools/testing/selftests/vDSO/vdso_test_gettimeofday.c

@@ -10,8 +10,6 @@
  * Tested on x86, 32-bit and 64-bit.  It may work on other architectures, too.
  */
 
-#include <stdint.h>
-#include <elf.h>
 #include <stdio.h>
 #include <sys/auxv.h>
 #include <sys/time.h>