selftests: x86 protection_keys fix unused variable compile warnings

Fix unused variable compile warnings in protection_keys.c
Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>

tools/testing/selftests/x86/protection_keys.c

@@ -812,8 +812,6 @@ void setup_hugetlbfs(void)
 {
 	int err;
 	int fd;
-	int validated_nr_pages;
-	int i;
 	char buf[] = "123";
 
 	if (geteuid() != 0) {
@@ -1133,7 +1131,6 @@ void test_pkey_syscalls_on_non_allocated_pkey(int *ptr, u16 pkey)
 void test_pkey_syscalls_bad_args(int *ptr, u16 pkey)
 {
 	int err;
-	int bad_flag = (PKEY_DISABLE_ACCESS | PKEY_DISABLE_WRITE) + 1;
 	int bad_pkey = NR_PKEYS+99;
 
 	/* not enforced when pkey_get() is not a syscall
@@ -1149,8 +1146,6 @@ void test_pkey_syscalls_bad_args(int *ptr, u16 pkey)
 /* Assumes that all pkeys other than 'pkey' are unallocated */
 void test_pkey_alloc_exhaust(int *ptr, u16 pkey)
 {
-	unsigned long flags;
-	unsigned long init_val;
 	int err;
 	int allocated_pkeys[NR_PKEYS] = {0};
 	int nr_allocated_pkeys = 0;