Staging: hv: remove Close from struct vmbus_channel_interface

No one calls it anymore, so remove it.

Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/channel_interface.c

@@ -36,13 +36,7 @@ static int ivmbus_open(struct hv_device *device, u32 sendbuffer_size,
 				channel_callback, context);
 }
 
-static void ivmbus_close(struct hv_device *device)
-{
-	vmbus_close(device->channel);
-}
-
 /* vmbus interface function pointer table */
 const struct vmbus_channel_interface vmbus_ops = {
 	.Open = ivmbus_open,
-	.Close = ivmbus_close,
 };

drivers/staging/hv/vmbus_api.h

@@ -87,7 +87,6 @@ struct hv_device_info {
 /**
  * struct vmbus_channel_interface - Contains member functions for vmbus channel
  * @Open:      Open the channel
- * @Close:     Close the channel
  *
  * This structure contains function pointer to control vmbus channel
  * behavior. None of these functions is externally callable, but they
@@ -99,7 +98,6 @@ struct vmbus_channel_interface {
 		    u32 RecvRingBufferSize, void *UserData, u32 UserDataLen,
 		    void (*ChannelCallback)(void *context),
 		    void *Context);
-	void (*Close)(struct hv_device *device);
 };
 
 extern const struct vmbus_channel_interface vmbus_ops;