Small flake8 fixes

tests/test_bot.py

@@ -620,7 +620,7 @@ class TestBot(object):
     # get_sticker_set, upload_sticker_file, create_new_sticker_set, add_sticker_to_set,
     # set_sticker_position_in_set and delete_sticker_from_set are tested in the
     # test_sticker module.
-    
+
     def test_timeout_propagation_explicit(self, monkeypatch, bot, chat_id):
 
         from telegram.vendor.ptb_urllib3.urllib3.util.timeout import Timeout

tests/test_callbackcontext.py

@@ -98,7 +98,6 @@ class TestCallbackContext(object):
         assert callback_context.update_queue is cdp.update_queue
 
     def test_match(self, cdp):
-
         callback_context = CallbackContext(cdp)
 
         assert callback_context.match is None
@@ -106,4 +105,3 @@ class TestCallbackContext(object):
         callback_context.matches = ['test', 'blah']
 
         assert callback_context.match == 'test'
-