ecryptfs: ecryptfs_dentry_info->crypt_stat is never used

... and never had anything non-NULL stored into it.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/ecryptfs/ecryptfs_kernel.h

diff --git a/fs/ecryptfs/ecryptfs_kernel.h b/fs/ecryptfs/ecryptfs_kernel.h
index 463b2d9..495fb45 100644
--- a/fs/ecryptfs/ecryptfs_kernel.h
+++ b/fs/ecryptfs/ecryptfs_kernel.h
@@ -262,10 +262,7 @@ struct ecryptfs_inode_info {
  * vfsmount too. */
 struct ecryptfs_dentry_info {
 	struct path lower_path;
-	union {
-		struct ecryptfs_crypt_stat *crypt_stat;
-		struct rcu_head rcu;
-	};
+	struct rcu_head rcu;
 };
 
 /**