Drop the INTEGRITY check

CONFIG_INTEGRITY is useless without enabling IMA/EVM.
We can't require enabling IMA/EVM because there are other
file system integrity mechanisms like DM_VERITY, FS_VERITY, etc.
So there is no reason to check CONFIG_INTEGRITY.

Refers to #75

kconfig_hardened_check/checks.py

@@ -394,10 +394,6 @@ def add_kconfig_checks(l, arch):
              modules_not_set)]
 
     # 'harden_userspace'
-    if arch in ('X86_64', 'ARM64', 'X86_32'):
-        l += [KconfigCheck('harden_userspace', 'defconfig', 'INTEGRITY', 'y')]
-    if arch == 'ARM':
-        l += [KconfigCheck('harden_userspace', 'my', 'INTEGRITY', 'y')]
     if arch == 'ARM64':
         l += [KconfigCheck('harden_userspace', 'defconfig', 'ARM64_PTR_AUTH', 'y')]
         l += [KconfigCheck('harden_userspace', 'defconfig', 'ARM64_BTI', 'y')]