sh: ecovec: Remove unused variable

Signed-off-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
diff --git a/board/renesas/ecovec/ecovec.c b/board/renesas/ecovec/ecovec.c
index 275b0ba..3bd1a62 100644
--- a/board/renesas/ecovec/ecovec.c
+++ b/board/renesas/ecovec/ecovec.c
@@ -55,7 +55,6 @@
 {
 	u8 mac[6];
 	char env_mac[17];
-	int i;
 
 	udelay(1000);