fix stules in paramoko tests

dulwich/contrib/test_paramiko_vendor.py

@@ -151,7 +151,7 @@ class ParamikoSSHVendorTests(TestCase):
 
     def test_run_command_password(self):
         vendor = ParamikoSSHVendor(allow_agent=False, look_for_keys=False,)
-        con = vendor.run_command(
+        vendor.run_command(
             '127.0.0.1', 'test_run_command_password',
             username=USER, port=self.port, password=PASSWORD)
 
@@ -161,7 +161,7 @@ class ParamikoSSHVendorTests(TestCase):
         key = paramiko.RSAKey.from_private_key(StringIO(CLIENT_KEY))
 
         vendor = ParamikoSSHVendor(allow_agent=False, look_for_keys=False,)
-        con = vendor.run_command(
+        vendor.run_command(
             '127.0.0.1', 'test_run_command_with_privkey',
             username=USER, port=self.port, pkey=key)