Due to lockdep changes, the CONFIG_DEBUG_LOCK_ALLOC ifdef is not needed
now. So just remove it here.
The following commit fixed the !lockdep build warnings:
commit 
e8f6fbf62de37cbc2e179176ac7010d5f4396b67
Author: Ingo Molnar <mingo@elte.hu>
Date:   Wed Nov 12 01:38:36 2008 +0000
    lockdep: include/linux/lockdep.h - fix warning in net/bluetooth/af_bluetooth.c
Signed-off-by: Dave Young <hidave.darkstar@gmail.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
 
 static struct net_proto_family *bt_proto[BT_MAX_PROTO];
 static DEFINE_RWLOCK(bt_proto_lock);
 
-#ifdef CONFIG_DEBUG_LOCK_ALLOC
 static struct lock_class_key bt_lock_key[BT_MAX_PROTO];
 static const char *bt_key_strings[BT_MAX_PROTO] = {
        "sk_lock-AF_BLUETOOTH-BTPROTO_L2CAP",
                        bt_slock_key_strings[proto], &bt_slock_key[proto],
                                bt_key_strings[proto], &bt_lock_key[proto]);
 }
-#else
-static inline void bt_sock_reclassify_lock(struct socket *sock, int proto)
-{
-}
-#endif
 
 int bt_sock_register(int proto, struct net_proto_family *ops)
 {