Add missing includes, remove unimplemented function declaration.

core/net/mac/nullrdc-noframer.c

@@ -40,6 +40,7 @@
 
 #include "net/mac/nullrdc-noframer.h"
 #include "net/packetbuf.h"
+#include "net/queuebuf.h"
 #include "net/netstack.h"
 #include <string.h>
 

core/net/mac/nullrdc.c

@@ -41,6 +41,7 @@
 
 #include "net/mac/nullrdc.h"
 #include "net/packetbuf.h"
+#include "net/queuebuf.h"
 #include "net/netstack.h"
 #include <string.h>
 

core/net/mac/sicslowmac.c

@@ -48,6 +48,7 @@
 #include "net/mac/sicslowmac.h"
 #include "net/mac/frame802154.h"
 #include "net/packetbuf.h"
+#include "net/queuebuf.h"
 #include "net/netstack.h"
 #include "lib/random.h"
 

core/net/queuebuf.c

@@ -148,8 +148,6 @@ LIST(queuebuf_list);
 uint8_t queuebuf_len, queuebuf_ref_len, queuebuf_max_len;
 #endif /* QUEUEBUF_STATS */
 
-static void queuebuf_remove_from_file(int swap_id);
-
 #if WITH_SWAP
 /*---------------------------------------------------------------------------*/
 static void