Revert "board: rockchip: Fix binman_init failure on EVB-RK3568"

An external TPL binary is now expected to be provided using ROCKCHIP_TPL
when building RK3568 targets.

This reverts commit 31500e7bcfaca08ab7c2879f502a6cf852410244.

Signed-off-by: Jonas Karlman <jonas@kwiboo.se>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
diff --git a/configs/evb-rk3568_defconfig b/configs/evb-rk3568_defconfig
index c7e0e5a..0f72925 100644
--- a/configs/evb-rk3568_defconfig
+++ b/configs/evb-rk3568_defconfig
@@ -65,5 +65,4 @@
 CONFIG_DEBUG_UART_SHIFT=2
 CONFIG_SYS_NS16550_MEM32=y
 CONFIG_SYSRESET=y
-# CONFIG_BINMAN_FDT is not set
 CONFIG_ERRNO_STR=y