Fixes for automated tests linting.

moto/cognitoidentity/models.py

@@ -77,7 +77,6 @@ class CognitoIdentityBackend(BaseBackend):
 
         return response
 
-
     def get_id(self):
         identity_id = {'IdentityId': get_random_identity_id(self.region)}
         return json.dumps(identity_id)
@@ -112,6 +111,7 @@ class CognitoIdentityBackend(BaseBackend):
                "IdentityId": identity_id
             })
 
+
 cognitoidentity_backends = {}
 for region in boto.cognito.identity.regions():
     cognitoidentity_backends[region.name] = CognitoIdentityBackend(region.name)

moto/cognitoidentity/responses.py

@@ -45,4 +45,3 @@ class CognitoIdentityResponse(BaseResponse):
 
     def get_open_id_token_for_developer_identity(self):
         return cognitoidentity_backends[self.region].get_open_id_token_for_developer_identity(self._get_param('IdentityId'))
-

moto/cognitoidentity/utils.py

@@ -1,5 +1,3 @@
-import collections
-import six
 from moto.core.utils import get_random_hex