c8ff7b3d34
- `distance` constraints were not very useful and increased the contact buffer within the constraint solver, violating a core design principle. Therefore they have been removed. - The enum value `mjEQ_DISTANCE` is retained, but errors will be thrown in the parser and engine if these constraints are selected. PiperOrigin-RevId: 467050101 Change-Id: Ie72a07e4fe338eea5107004a9fc0f5e47eb0c3b7