Staging: hv: netvsc_drv: Get rid of the unnecessary state from struct netvsc_driver

Now get rid of unused state (ring_buf_size) from struct netvsc_driver.
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/hyperv_net.h

@@ -86,8 +86,6 @@ struct netvsc_driver {
 	/* Must be the first field */
 	/* Which is a bug FIXME! */
 	struct hv_driver base;
-
-	u32 ring_buf_size;
 };
 
 static inline