Remove trailing whitespace
diff --git a/tests/hazmat/backends/test_multibackend.py b/tests/hazmat/backends/test_multibackend.py
index b399837..71755f9 100644
--- a/tests/hazmat/backends/test_multibackend.py
+++ b/tests/hazmat/backends/test_multibackend.py
@@ -112,7 +112,7 @@
 
     def encrypt_rsa(self, public_key, plaintext, padding):
         pass
-        
+
     def load_rsa_numbers(self, numbers):
         pass