revert spurious whitespace changes

src/_zkapauthorizer/_plugin.py

@@ -167,6 +167,7 @@ class ZKAPAuthorizer(object):
             get_passes,
         )
 
+
     def get_client_resource(self, node_config):
         from twisted.internet import reactor
         return resource_from_configuration(

src/_zkapauthorizer/resource.py

@@ -108,7 +108,6 @@ def from_configuration(node_config, store, redeemer=None):
             controller,
         ),
     )
-
     return root
 
 

src/_zkapauthorizer/tests/test_plugin.py

@@ -124,6 +124,7 @@ from .matchers import (
     Provides,
 )
 
+
 SIGNING_KEY_PATH = FilePath(__file__).sibling(u"testing-signing.key")