MAGN-5449: Stop-gap to fix DynamoRaaS nodes

### Problem

The DynamoRaaS dll's previously queried the `DynamoRunner.Running` property to determine if a run was cancelled or not.  This property is now obsolete and always returns `false`, thus breaking the nodes.


### Fix

I simply removed the check - fixing the nodes.  Note that the user already lost the ability to cancel when we made the transition to 0.7.0.  

### Reviewers

* [x] @Benglin