layerscape: base-files: remove redundant RAMFS_COPY_* additions

All the tools (e.g fw_setenv, ubiupdatevol) and config (fw_env.config)
needed for sysupgrade are already included in /lib/upgrade/stage2

Signed-off-by: Mathew McBride <[email protected]>

target/linux/layerscape/base-files/lib/upgrade/platform.sh

@@ -3,8 +3,8 @@
 # Copyright 2020 NXP
 #
 
-RAMFS_COPY_BIN="/usr/sbin/fw_printenv /usr/sbin/fw_setenv /usr/sbin/ubinfo /bin/echo"
-RAMFS_COPY_DATA="/etc/fw_env.config /var/lock/fw_printenv.lock"
+RAMFS_COPY_BIN=""
+RAMFS_COPY_DATA=""
 
 REQUIRE_IMAGE_METADATA=1