Placate flake8 and isort

Author: dpoirier

stack/assets.py

@@ -5,15 +5,14 @@
     And,
     Equals,
     GetAtt,
-    iam,
     If,
     Join,
     Not,
     NoValue,
     Output,
     Ref,
     Split,
-    Condition,
+    iam
 )
 from troposphere.certificatemanager import Certificate, DomainValidationOption
 from troposphere.cloudfront import (

stack/sftp.py

@@ -2,18 +2,15 @@
     And,
     Condition,
     Equals,
-    GetAtt,
-    If,
     Join,
     Not,
     Parameter,
     Ref,
     Tags,
-    iam,
-    transfer,
+    transfer
 )
 
-from .common import arn_prefix, cmk_arn, use_aes256_encryption_cond, use_cmk_arn
+from .common import use_aes256_encryption_cond, use_cmk_arn
 from .template import template
 
 use_sftp_server = template.add_parameter(