security: remove duplicated include from security.h

Remove duplicated include.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: James Morris <jmorris@namei.org>
diff --git a/include/linux/security.h b/include/linux/security.h
index 9df7547..896da44 100644
--- a/include/linux/security.h
+++ b/include/linux/security.h
@@ -30,7 +30,6 @@
 #include <linux/err.h>
 #include <linux/string.h>
 #include <linux/mm.h>
-#include <linux/fs.h>
 
 struct linux_binprm;
 struct cred;