greybus: kill test_sink.c

This file is an artifact of some early testing, but it is otherwise
unused.  So get rid of it.
Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>

drivers/staging/greybus/Makefile

@@ -17,7 +17,6 @@ greybus-y :=	core.o		\
 
 obj-m += greybus.o
 obj-m += es1-ap-usb.o
-obj-m += test_sink.o
 
 KERNELVER		?= $(shell uname -r)
 KERNELDIR 		?= /lib/modules/$(KERNELVER)/build

drivers/staging/greybus/test_sink.c

-/*
- * Test "sink" Greybus driver.
- *
- * Copyright 2014 Google Inc.
- *
- * Released under the GPLv2 only.
- */
-
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include "greybus.h"
-
-struct test_device {
-	struct gb_module *gmod;
-};
-
-int gb_register_cport_complete(struct gb_module *gmod,
-			       gbuf_complete_t handler, u16 cport_id,
-			       void *context);
-void gb_deregister_cport_complete(u16 cport_id);
-
-
-
-static int test_init(void)
-{
-	return 0;
-}
-
-static void test_exit(void)
-{
-}
-
-module_init(test_init);
-module_exit(test_exit);
-
-MODULE_LICENSE("GPL");
-MODULE_AUTHOR("Greg Kroah-Hartman <gregkh@linuxfoundation.org>");