aufs: remove lockdep workaround

When using this workaround the kernel is hanging at "Unpacking initramfs...".

filesystem/aufs/aufs-lockdep.diff

@@ -1,38 +0,0 @@
-# --- SDE-COPYRIGHT-NOTE-BEGIN ---
-# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
-#
-# Filename: package/.../aufs/aufs-lockdep.diff
-# Copyright (C) 2013 The OpenSDE Project
-#
-# More information can be found in the files COPYING and README.
-#
-# This patch file is dual-licensed. It is available under the license the
-# patched project is licensed under, as long as it is an OpenSource license
-# as defined at http://www.opensource.org/ (e.g. BSD, X11) or under the terms
-# of the GNU General Public License as published by the Free Software
-# Foundation; either version 2 of the License, or (at your option) any later
-# version.
-# --- SDE-COPYRIGHT-NOTE-END ---
-
-diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
-index 00e4637..ec95456 100644
---- a/include/linux/lockdep.h
-+++ b/include/linux/lockdep.h
-@@ -29,7 +29,7 @@ extern int lock_stat;
-  */
- #define XXX_LOCK_USAGE_STATES		(1+3*4)
- 
--#define MAX_LOCKDEP_SUBCLASSES		8UL
-+#define MAX_LOCKDEP_SUBCLASSES		(8UL + 4)
- 
- /*
-  * NR_LOCKDEP_CACHING_CLASSES ... Number of classes
-@@ -203,7 +203,7 @@ struct lock_chain {
- 	u64				chain_key;
- };
- 
--#define MAX_LOCKDEP_KEYS_BITS		13
-+#define MAX_LOCKDEP_KEYS_BITS		(13 + 4)
- /*
-  * Subtract one because we offset hlock->class_idx by 1 in order
-  * to make 0 mean no class. This avoids overflowing the class_idx