integration fix: remove definition of OAI_NW_DRIVER_USE_NETLINK in source file

This is done better by commit 6210eb056f880a52edfe9de64c6839154a5c7429.

openair2/NETWORK_DRIVER/UE_IP/local.h

@@ -57,7 +57,6 @@
 #include "platform_types.h"
 #include "sap.h"
 
-#define OAI_NW_DRIVER_USE_NETLINK 1
 
 typedef struct ue_ip_priv_s {
   int                        irq;