Remove unused imports and fix some other linter errors.

recipe_engine/simulation_test.py

Index: recipe_engine/simulation_test.py
diff --git a/recipe_engine/simulation_test.py b/recipe_engine/simulation_test.py
index 770638bf86584dd667892e301d985ec87bde9923..6967c09022ceddd3d2feae85a1a40352b7d3941d 100644
--- a/recipe_engine/simulation_test.py
+++ b/recipe_engine/simulation_test.py
@@ -5,27 +5,20 @@
 """Provides simulator test coverage for individual recipes."""
 
 import StringIO
-import ast
-import contextlib
 import copy
 import json
 import logging
 import os
 import re
 import sys
-import textwrap
-import traceback
-import inspect
 
-from collections import OrderedDict, namedtuple
+from . import env
 
 from . import config_types
-from . import env
 from . import loader
 from . import run
 from . import step_runner
 from . import stream
-from expect_tests.util import covers as expect_tests_covers

[Vadim Sh., 2017/02/21 05:46:26]

I hope it isn't some magical import that enables something by being imported?

[iannucci, 2017/02/21 06:07:47]

Shouldn't be...

 from expect_tests.main import main as expect_tests_main
 from expect_tests.type_definitions import Result, Test, FuncCall
 from .checker import Checker, VerifySubset