ot1200: Fix unused variable warning

The variable pwm_pad is never referenced, drop.

Cc: Christian Gmeiner <christian.gmeiner@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>

board/bachmann/ot1200/ot1200.c

@@ -273,10 +273,6 @@ int board_mmc_init(bd_t *bis)
 	return 0;
 }
 
-static iomux_v3_cfg_t const pwm_pad[] = {
-	MX6_PAD_SD1_CMD__PWM4_OUT | MUX_PAD_CTRL(OUTPUT_40OHM),
-};
-
 static void leds_on(void)
 {
 	/* turn on all possible leds connected via GPIO expander */