I want to remove some files (in this case etc/snmp/snmptrapd.conf as example) in SDK. A bit strange to be, if I build this image (without -c populate_sdk), this is not part of it. But it becomes part of the SDK. The way I know to remove something in image (ROOTFS_POSTPROCESS_COMMAND) is not working here. What can I do? How can I adjust what is in SDK?