I did a weight reduction campaign on a Can-Am 175TNT once to turn it into a little road racer. The big benefit was in the project itself to do something perceived as fun. I can understand that. It took a lot of time and money with little real benefit in the ride. It was fun though. I drilled a lot of holes in things, the front disc in the upgraded brake especially comes to mind. Relacing the spokes when replacing the steel rims with alloys almost drove me nuts. The project literally and figuratively kept me off the streets.
Anyway, ABS can be disabled by a simple heavy duty switch or relay in the ABS valve fuse line or by pulling the fuse.
Replace the gas tank with a two liter plastic bottle. Cut out one of the cylinders for big weight savings. Replace the stock wheels with skinny moped wheels. Drill holes in all of the metal. Remove the instrument panel, headlight and taillight assemblies. Remove the seat and battery (pop start it). After all of this, ask yourself if weight was really a consideration when you bought this bike
"Riding a motorcycle is very good for your health until it suddenly isn't. It's like having a poison pill in your bottle of Tylenol. You'll run into it one day, and the relief the others gave you probably wasn't worth it at all." K'ale
The bike doesn't need twin disc front brakes. Remove one caliper and disc, then to be sure take off the rear disc and caliper. Just plan ahead when you want to stop
Also take off ALL the bodywork, headlights and make it into a complete naked bike. If you need light a couple of LED torches strapped on the front will do. Make sure to remove indicators, hand signals are fine.
You also don't need the sidestand, just leave it against a wall or lay it down when not riding, like a mountain bike!
Convert the chain & sprockets to 420 pitch. Won't last long and you will probably spit a chain, but hey you are saving weight.
Lastly ride naked. Gear adds weight to the rider, unnecessary. You might get hurt if you crash, but you are saving weight!
I'm sorry, but removing the ABS due to weight saving is one of the silliest ideas I have heard. The mirrors weigh more than the ABS.
I guess you aren't planning on having insurance, because the insurance company won't cover you if you've pulled the ABS off the bike. The premiums for the L2+ DL650A is based on it having ABS (hence the A on the end).