ARM: rmobile: Beacon: Remove dead code

There are a few do-nothing functions that can be removed.
Remove them.

Signed-off-by: Adam Ford <aford173@gmail.com>
diff --git a/configs/r8a774a1_beacon_defconfig b/configs/r8a774a1_beacon_defconfig
index 2b1057f..acfab77 100644
--- a/configs/r8a774a1_beacon_defconfig
+++ b/configs/r8a774a1_beacon_defconfig
@@ -15,6 +15,7 @@
 CONFIG_SUPPORT_RAW_INITRD=y
 # CONFIG_ARCH_FIXUP_FDT_MEMORY is not set
 CONFIG_DEFAULT_FDT_FILE="r8a774a1-beacon-rzg2m-kit.dtb"
+# CONFIG_BOARD_EARLY_INIT_F is not set
 CONFIG_HUSH_PARSER=y
 CONFIG_CMD_BOOTZ=y
 CONFIG_CMD_GPIO=y