Remove deprecated set_limits function in next version

[robertocarlous]

Description

The set_limits function is marked deprecated in the contract spec but still exists in the contract. It should be removed in a future Version bump.

Current State

• Function exists in the contract
• Marked as deprecated in contract-spec.json
• Still callable by owner

Expected Behavior

• Remove function in next major version
• Add migration path for any existing callers
• Update documentation

Files Affected

• neurowealth-vault/contracts/vault/src/lib.rs
• contract-spec.json

[egwujiohaifesinachiperpetual-max]

Please assign
ETA is 4 hours