Bluetooth: Remove missing code

This patch removes the struct adv_entry since it is not used anymore.
This struct should have been removed in commit 479453d (Bluetooth:
Remove advertising cache).

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
diff --git a/include/net/bluetooth/hci_core.h b/include/net/bluetooth/hci_core.h
index 475b8c0..41b2664 100644
--- a/include/net/bluetooth/hci_core.h
+++ b/include/net/bluetooth/hci_core.h
@@ -115,12 +115,6 @@
 	u8 randomizer[16];
 };
 
-struct adv_entry {
-	struct list_head list;
-	bdaddr_t bdaddr;
-	u8 bdaddr_type;
-};
-
 struct le_scan_params {
 	u8 type;
 	u16 interval;