Delete Dynamic Reward Rule

[freewil]

The documentation mentions how to create a reward rule, but it doesn't mention any way to update or delete a reward rule:

https://github.com/BranchMetrics/branch-deep-linking-public-api/blob/da31d84126b7e1ddb8324e13cb14bee8b05fa0e3/README.md#creating-a-dynamic-reward-rule