util/os_memory: never use os_memory_debug.h

This is currently broken hard, because this code is being used in more places that it used to be, and fixing that is prohibitively hard right now.

This is far from ideal, as it leaves the same inconsistency in the EMBEDDED_DEVICE code-path. But that only used by VMWare, so it's probably better if they fix it, as they know their requirements better than we do.