Remove stray comment (GoogleCloudPlatform#440)

Ace Nassri · Jon Wayne Parrott · commit bc6000fe7606 · 2016-08-08T12:03:18.000-07:00
(This comment looks like it doesn't belong here.)
diff --git a/bigquery/api/list_datasets_projects.py b/bigquery/api/list_datasets_projects.py
@@ -47,7 +47,6 @@ def list_datasets(bigquery, project):
 # [START list_projects]
 def list_projects(bigquery):
     try:
-        # Start training on a data set
         projects = bigquery.projects()
         list_reply = projects.list().execute()
 
