mx6ul_14x14_evk: Remove get_board_rev()

get_board_rev() is not actually providing the board revision.

It just returns the CPU revision instead.

As the CPU revision is already printed on boot, there is no
reason to have get_board_rev(), so let's remove it.

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
diff --git a/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c b/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
index 3d5c285..8650f35 100644
--- a/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
+++ b/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
@@ -631,11 +631,6 @@
 	return 0;
 }
 
-u32 get_board_rev(void)
-{
-	return get_cpu_rev();
-}
-
 int checkboard(void)
 {
 	if (is_mx6ul_9x9_evk())