Updated imports in test file

Author: technige

test/test_session.py

@@ -26,15 +26,14 @@
 from mock import patch
 
 from neo4j.v1.constants import TRUST_ON_FIRST_USE
-from neo4j.v1.exceptions import CypherError, ResultError
+from neo4j.v1.exceptions import CypherError, ProtocolError, ResultError
 from neo4j.v1.session import GraphDatabase, basic_auth, Record, SSL_AVAILABLE
 from neo4j.v1.types import Node, Relationship, Path
 
 from test.util import ServerTestCase
 
 
 auth_token = basic_auth("neo4j", "neo4j")
-from neo4j.v1.exceptions import ProtocolError
 
 
 class DriverTestCase(ServerTestCase):