Staging: hv: Get rid of dev_rm from struct hv_driver

Now that we have gotten rid of the indirection for invoking dev_rm,
get rid of this.
Signed-off-by: NK. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: NHaiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: NAbhishek Kane <v-abkane@microsoft.com>
Signed-off-by: NHank Janssen <hjanssen@microsoft.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/vmbus_api.h

@@ -96,7 +96,6 @@ struct hv_driver {
 
 	struct device_driver driver;
 
-	int (*dev_rm)(struct hv_device *device);
 	void (*cleanup)(struct hv_driver *driver);
 
 	int (*probe)(struct hv_device *);