staging/ozwpan: Remove empty and unused function oz_cdev_heartbeat

oz_cdev_heartbeat is empty and unused -> safe to remove.

Signed-off-by: Peter Huewe <peterhuewe@gmx.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/ozwpan/ozcdev.c

@@ -525,9 +525,3 @@ void oz_cdev_rx(struct oz_pd *pd, struct oz_elt *elt)
 out:
 	oz_cdev_release_ctx(ctx);
 }
-/*------------------------------------------------------------------------------
- * Context: softirq
- */
-void oz_cdev_heartbeat(struct oz_pd *pd)
-{
-}

drivers/staging/ozwpan/ozcdev.h

@@ -13,6 +13,5 @@ void oz_cdev_term(void);
 int oz_cdev_start(struct oz_pd *pd, int resume);
 void oz_cdev_stop(struct oz_pd *pd, int pause);
 void oz_cdev_rx(struct oz_pd *pd, struct oz_elt *elt);
-void oz_cdev_heartbeat(struct oz_pd *pd);
 
 #endif /* _OZCDEV_H */