mysql: minor optimization

It's been many years we don't get 'array' objects, no idea when exactly.

neo/storage/database/mysql.py

@@ -221,10 +221,7 @@ class MySQLDatabaseManager(DatabaseManager):
         conn.query(query)
         if query.startswith("SELECT "):
             r = conn.store_result()
-            return tuple([
-                tuple([d.tostring() if isinstance(d, array) else d
-                      for d in row])
-                for row in r.fetch_row(r.num_rows())])
+            return r.fetch_row(r.num_rows())
         r = query.split(None, 1)[0]
         if r in ("INSERT", "REPLACE", "DELETE", "UPDATE"):
             self._active = 1

neo/tests/storage/testStorageMySQL.py

@@ -63,30 +63,12 @@ class StorageMySQLdbTests(StorageDBTests):
             raise unittest.SkipTest(m)
         return db
 
-    def test_query1(self):
-        # fake result object
-        from array import array
-        result_object = Mock({
-            "num_rows": 1,
-            "fetch_row": ((1, 2, array('b', (1, 2, ))), ),
-        })
-        # expected formatted result
-        expected_result = (
-            (1, 2, '\x01\x02', ),
-        )
-        self.db.conn = Mock({ 'store_result': result_object })
-        result = self.db.query('SELECT ')
-        self.assertEqual(result, expected_result)
-        calls = self.db.conn.mockGetNamedCalls('query')
-        self.assertEqual(len(calls), 1)
-        calls[0].checkArgs('SELECT ')
-
-    def test_query2(self):
+    def test_ServerGone(self):
         with ServerGone(self.db) as p:
             self.assertRaises(ProgrammingError, self.db.query, 'QUERY')
             self.assertFalse(p.applied)
 
-    def test_query3(self):
+    def test_OperationalError(self):
         # OperationalError > raise DatabaseFailure exception
         class FakeConn(object):
             def close(self):