integrity: Delete ineffective kconfig assignments

We didn't enable INTEGRITY_SIGNATURE and INTEGRITY_ASYMMETRIC_KEYS,
which are dependencies for these.  According to bug #865277, we
should not enable them.

debian/config/config

@@ -7093,7 +7093,6 @@ CONFIG_SECURITY_APPARMOR_HASH_DEFAULT=y
 ##
 CONFIG_INTEGRITY=y
 # CONFIG_INTEGRITY_SIGNATURE is not set
-CONFIG_INTEGRITY_TRUSTED_KEYRING=y
 CONFIG_INTEGRITY_AUDIT=y
 
 ##
@@ -7114,10 +7113,6 @@ CONFIG_IMA_DEFAULT_HASH_SHA256=y
 # CONFIG_IMA_WRITE_POLICY is not set
 # CONFIG_IMA_READ_POLICY is not set
 CONFIG_IMA_APPRAISE=y
-CONFIG_IMA_KEYRINGS_PERMIT_SIGNED_BY_BUILTIN_OR_SECONDARY=y
-CONFIG_IMA_BLACKLIST_KEYRING=y
-# CONFIG_IMA_LOAD_X509 is not set
-# CONFIG_IMA_APPRAISE_SIGNED_INIT is not set
 
 ##
 ## file: security/keys/Kconfig