Fix trailing blank lines in test_reader.py

Author: kimimgo

Lib/test/test_pyrepl/test_reader.py

@@ -586,5 +586,3 @@ def test_control_characters(self):
         reader, _ = handle_all_events(events)
         self.assert_screen_equal(reader, 'flag = "🏳️\\u200d🌈"', clean=True)
         self.assert_screen_equal(reader, 'flag {o}={z} {s}"🏳️\\u200d🌈"{z}'.format(**colors))
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