mpc83xx: Remove CONFIG options related to OF that we dont use (on 837x)

continuation of commit 37395fa2b0d9d617f28d44ca11592260ef16105a to 837x
Signed-off-by: NKim Phillips <kim.phillips@freescale.com>

include/configs/MPC837XEMDS.h

@@ -297,8 +297,6 @@
 /* Pass open firmware flat tree */
 #define CONFIG_OF_LIBFDT	1
 #define CONFIG_OF_BOARD_SETUP	1
-#define CONFIG_OF_HAS_BD_T	1
-#define CONFIG_OF_HAS_UBOOT_ENV	1
 
 #define OF_CPU			"PowerPC,837x@0"
 #define OF_SOC			"soc837x@e0000000"