s390/hwcaps: remove z/Architecture mode active check

Remove a leftover from the common 31/64 bit code. z/Architecture mode
is now always active, there is no need to check.
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

arch/s390/kernel/processor.c

@@ -184,8 +184,7 @@ static int __init setup_hwcaps(void)
 		elf_hwcap |= HWCAP_ESAN3;
 
 	/* z/Architecture mode active */
-	if (test_facility(2))
-		elf_hwcap |= HWCAP_ZARCH;
+	elf_hwcap |= HWCAP_ZARCH;
 
 	/* store-facility-list-extended */
 	if (test_facility(7))