Fix typo in nfs.c

An obvious typo. Originally fixed in linkstation u-boot port.

Signed-off-by: Guennadi Liakhovetski <lg@denx.de>
diff --git a/net/nfs.c b/net/nfs.c
index df2caac..1b27c97 100644
--- a/net/nfs.c
+++ b/net/nfs.c
@@ -405,7 +405,6 @@
 
 	if (rpc_pkt.u.reply.rstatus  ||
 	    rpc_pkt.u.reply.verifier ||
-	    rpc_pkt.u.reply.astatus  ||
 	    rpc_pkt.u.reply.astatus) {
 		return -1;
 	}