Staging: hv: netvsc_drv: Get rid of unused state in struct netvsc_driver

Now, get rid of unused state (req_ext_size) from struct netvsc_driver.
Signed-off-by: K. Y. Srinivasan <kys@microsoft.com>
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: Abhishek Kane <v-abkane@microsoft.com>
Signed-off-by: Hank Janssen <hjanssen@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

drivers/staging/hv/hyperv_net.h

@@ -88,8 +88,6 @@ struct netvsc_driver {
 	struct hv_driver base;
 
 	u32 ring_buf_size;
-	u32 req_ext_size;
-
 };
 
 static inline