What's the adjective for defunctionalization? Here's the word you're looking for.
Included below are past participle and present participle forms for the
verbs defunct and defunctionalize which may be used as adjectives within certain contexts.
(computing) Specifically, of a program: that has terminated but is still shown in the list of processes because the parent process that created it is still running and has not yet reaped it. See also zombie, zombie process.
“She is the defunct queen of Naples, Maria Christina, whom Rome intends to canonize.”
“Some local historians, taking note of an old but now defunct tradition of putting on a Passion Play every five years in Willendorf, put about the story that Willendorfers were heir to the world's oldest spiritual tradition.”
“And let's not forget any lingering remnants of data from our older collections of USB drives, SD cards, and defunct computers.”
defunctioning
(surgery) Involving a diversion from part of the body that would usually perform a certain function.