Staging: hv: storvsc: Get rid of some unnecessary state and definitions

Now, get rid of some unnecessary state and definitions.
Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: NHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/storvsc_drv.c

@@ -245,7 +245,6 @@ enum storvsc_request_type {
 
 
 struct hv_storvsc_request {
-	struct hv_storvsc_request *request;
 	struct hv_device *device;
 
 	/* Synchronize the request/response if needed */
@@ -260,14 +259,6 @@ struct hv_storvsc_request {
 };
 
 
-struct storvsc_device_info {
-	u32 ring_buffer_size;
-	unsigned int port_number;
-	unsigned char path_id;
-	unsigned char target_id;
-};
-
-
 /* A storvsc device is a device object that contains a vmbus channel */
 struct storvsc_device {
 	struct hv_device *device;