lsm: drop LSM_ID_IMA

When IMA becomes a proper LSM we will reintroduce an appropriate
LSM ID, but drop it from the userspace API for now in an effort
to put an end to debates around the naming of the LSM ID macro.
Reviewed-by: Roberto Sassu <roberto.sassu@huawei.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

include/uapi/linux/lsm.h

@@ -54,14 +54,13 @@ struct lsm_ctx {
 #define LSM_ID_SELINUX		101
 #define LSM_ID_SMACK		102
 #define LSM_ID_TOMOYO		103
-#define LSM_ID_IMA		104
-#define LSM_ID_APPARMOR		105
-#define LSM_ID_YAMA		106
-#define LSM_ID_LOADPIN		107
-#define LSM_ID_SAFESETID	108
-#define LSM_ID_LOCKDOWN		109
-#define LSM_ID_BPF		110
-#define LSM_ID_LANDLOCK		111
+#define LSM_ID_APPARMOR		104
+#define LSM_ID_YAMA		105
+#define LSM_ID_LOADPIN		106
+#define LSM_ID_SAFESETID	107
+#define LSM_ID_LOCKDOWN		108
+#define LSM_ID_BPF		109
+#define LSM_ID_LANDLOCK		110
 
 /*
  * LSM_ATTR_XXX definitions identify different LSM attributes