gw_ventana: Fix unused variable warnings

The variable nfc_pads is only referenced when CONFIG_CMD_NAND is set,
move the existing guard and drop a now redundant comment.  The variable
gwproto_gpio_pads is never referenced, remove it.

Cc: Tim Harvey <tharvey@gateworks.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
diff --git a/board/gateworks/gw_ventana/gw_ventana.c b/board/gateworks/gw_ventana/gw_ventana.c
index dc8cd88..c4c2d23 100644
--- a/board/gateworks/gw_ventana/gw_ventana.c
+++ b/board/gateworks/gw_ventana/gw_ventana.c
@@ -76,7 +76,7 @@
 	IOMUX_PADS(PAD_ENET_TXD0__GPIO1_IO30 | DIO_PAD_CFG),
 };
 
-/* NAND */
+#ifdef CONFIG_CMD_NAND
 static iomux_v3_cfg_t const nfc_pads[] = {
 	IOMUX_PADS(PAD_NANDF_CLE__NAND_CLE     | MUX_PAD_CTRL(NO_PAD_CTRL)),
 	IOMUX_PADS(PAD_NANDF_ALE__NAND_ALE     | MUX_PAD_CTRL(NO_PAD_CTRL)),
@@ -95,7 +95,6 @@
 	IOMUX_PADS(PAD_NANDF_D7__NAND_DATA07   | MUX_PAD_CTRL(NO_PAD_CTRL)),
 };
 
-#ifdef CONFIG_CMD_NAND
 static void setup_gpmi_nand(void)
 {
 	struct mxc_ccm_reg *mxc_ccm = (struct mxc_ccm_reg *)CCM_BASE_ADDR;