For anyone in need, I've got my robot arm removed using cheat code below
traits.remove_trait trait_RoboticsArm_Wearing_[YourArmColor]
Thanks to @crinrict, with I confirmed that this arm thing is hidden trait, for me it's trait_RoboticsArm_Wearing_WhiteCopper.
Please note that the arm won't show in inventory after using the cheat code, but you can wear it again with
traits.equip_trait trait_RoboticsArm_Wearing_[YourArmColor]
(Removed mod link) - Atic
Oh my god! esgfwall! I tried this cheat and it worked. It took me about 20 minutes to get it done as for some reason the arm was labelled White beige in the game and needed to be beige white in the cheats, but I am just so happy to have the stupid things off. I have been working on a save file for about a year and a half and I wasn't going to abandon my sims no matter what because I had put so much into them, but both of the sims in a couple had been stuck with the arms on since university came out and I have since got packs with really nice one piece outfits that they could not wear with the arms. I also was getting sick of watching them walk around in their underpants when they came home from work. When the arms came off I nearly cried.
Thank you!
For me solution was traits.remove_trait trait_RoboticsArm_Wearing_RedGreen
