svc_vc.c:  remove unused variable refcnt

nfs-ganesha treats warnings as errors.

Signed-off-by: Matt Benjamin <mbenjamin@redhat.com>
diff --git a/src/svc_vc.c b/src/svc_vc.c
index e5071c1..e4c0e98 100644
--- a/src/svc_vc.c
+++ b/src/svc_vc.c
@@ -628,7 +628,6 @@
 	struct cf_rendezvous *rdvs = (struct cf_rendezvous *)xprt->xp_p1;
 	struct x_vc_data *xd = (struct x_vc_data *)xprt->xp_p2;
 	struct rpc_dplx_rec *rec = (struct rpc_dplx_rec *)xprt->xp_p5;
-	int refcnt;
 
 	/* clears xprt from the xprt table (eg, idle scans) */
 	xprt_unregister(xprt);