title: Can't delete BigQuery dataset + tables
body: <p>I have a dataset with around 200k tables that I'm trying to delete. I've been using the commandline tool to run <code>bq rm -r -f datasetID</code>, but it has only deleted about 4% in 24 hours. (I can only guess at the amount by logging into the web UI and seeing what tables are left). Is there a faster way to get that done?</p>