unnecessary

Etymology

un- + necessary

adj

1. Not needed or necessary.
   The automatic child-frightener made clowns unnecessary.
   Robins, of Torquay, had denied a single charge of causing unnecessary suffering to an animal. She claimed the microwave was accidentally turned on by one of the cats after the kitten got inside. But Knutton said the kitten was too small to even get onto the work surface. December 14, 2011, Steven Morris, “Devon woman jailed for 168 days for killing kitten in microwave”, in Guardian
2. Done in addition to requirements; unrequired.