Nuke neck_grab and hand(s)_around_neck

BUR #16885 has been rejected.

nuke neck_grab
nuke hand_around_neck
deprecate hands_around_neck

Neck grab and hand around neck are ambiguous when we have hand on another's neck, arm around neck, hand on own neck, etc. Hands around neck doesn't exist and should be deprecated before it can be populated.

I've cleaned up neck_grab status:any -hand_on_own_neck -hands_on_another's_neck -hand_on_another's_neck -arm_around_neck -arms_around_neck -hands_on_own_neck, which has 16 posts of tentacles and 6 banned posts I can't see. Maybe we can create tentacles around neck?
I've cleaned up hand_around_neck status:any -hand_on_own_neck -hands_on_another's_neck -hand_on_another's_neck -arm_around_neck -arms_around_neck -hands_on_own_neck too, which has 8 banned posts, 3 disembodied hands, and post #4818425 where I have no idea what's going on in the image.

I've created tentacle around neck.

Some observations:

• hand on another's neck and hands on another's neck shouldn't be mutually exclusive
• trying to keep strangling posts out of hand on another's neck is a delusional stance, the hands are on someone else's neck in those posts, and nothing's gonna stop our users from tagging them as such

This bulk update request is pending automatic rejection in 5 days.

This bulk update request has been rejected because it was not approved within 45 days.

The bulk update request #16885 (forum #241706) has been rejected by @DanbooruBot.