Fixed Flake8 issues :D

Author: syrusakbary

.travis.yml

@@ -34,6 +34,7 @@ matrix:
     script:
     - py.test --cov=graphql graphql tests tests_py35
   - python: '2.7'
+    install: pip install flake8
     script:
     - flake8
 deploy:

graphql/execution/experimental/fragment.py

@@ -4,18 +4,17 @@
 
 from ...pyutils.cached_property import cached_property
 from ...pyutils.default_ordered_dict import DefaultOrderedDict
-from ...pyutils.ordereddict import OrderedDict
 from ...type import (GraphQLInterfaceType, GraphQLList, GraphQLNonNull,
                      GraphQLObjectType, GraphQLUnionType)
 from ..base import ResolveInfo, Undefined, collect_fields, get_field_def
 from ..values import get_argument_values
 from ...error import GraphQLError
-from .utils import imap, normal_map
 try:
     from itertools import izip as zip
 except:
     pass
 
+
 def get_base_type(type):
     if isinstance(type, (GraphQLList, GraphQLNonNull)):
         return get_base_type(type.of_type)