Removing docstring lines with only empty '>>>'.

Found via "git grep -e '>>>$'".

Author: dhermes

gcloud/datastore/__init__.py

@@ -20,10 +20,10 @@
 >>> from gcloud.datastore.entity import Entity
 >>> from gcloud.datastore.key import Key
 >>> from gcloud.datastore.query import Query
->>>
+
 >>> datastore.set_default_connection()
 >>> datastore.set_default_dataset_id()
->>>
+
 >>> key = Key('EntityKind', 1234)
 >>> entity = Entity(key)
 >>> query = Query(kind='EntityKind')
@@ -102,7 +102,7 @@ def get_connection():
 
     >>> from gcloud import datastore
     >>> from gcloud.datastore import Key
-    >>>
+
     >>> connection = datastore.get_connection()
     >>> key1 = Key('Kind', 1234, dataset_id='dataset1')
     >>> key2 = Key('Kind', 1234, dataset_id='dataset2')

gcloud/datastore/connection.py

@@ -263,10 +263,10 @@ def run_query(self, dataset_id, query_pb, namespace=None, eventual=False):
 
         >>> from gcloud import datastore
         >>> from gcloud.datastore.query import Query
-        >>>
+
         >>> datastore.set_default_connection()
         >>> datastore.set_default_dataset_id()
-        >>>
+
         >>> query = Query(kind='MyKind')
         >>> query.add_filter('property', '=', 'val')
 

gcloud/datastore/transaction.py

@@ -30,10 +30,10 @@ class Transaction(object):
 
       >>> from gcloud import datastore
       >>> from gcloud.datastore.transaction import Transaction
-      >>>
+
       >>> datastore.set_default_connection()
       >>> datastore.set_default_dataset_id()
-      >>>
+
       >>> with Transaction()
       ...     entity1.save()
       ...     entity2.save()