Remove references to internal libnl headers.

Test: Builds.
Change-Id: I36ecae92134011f8143402f8ac1b3c28d373bfd7
(cherry picked from commit c4a6530055318dc3a65a6054355a8139df70c614)
diff --git a/bcmdhd/wifi_hal/wifi_offload.cpp b/bcmdhd/wifi_hal/wifi_offload.cpp
index d80b182..d07fdb0 100644
--- a/bcmdhd/wifi_hal/wifi_offload.cpp
+++ b/bcmdhd/wifi_hal/wifi_offload.cpp
@@ -31,8 +31,6 @@
 #include <netlink/object-api.h>
 #include <netlink/netlink.h>
 #include <netlink/socket.h>
-#include <netlink-private/object-api.h>
-#include <netlink-private/types.h>
 
 
 #include "nl80211_copy.h"