Remove newlines at the end of discount_code_test.py

Author: Paulinakhew

test/discount_code_test.py

@@ -28,7 +28,3 @@ def test_delete_a_specific_discount_code(self):
       self.fake('price_rules/1213131/discount_codes/34', method='DELETE', body='destroyed')
       self.discount_code.destroy()
       self.assertEqual('DELETE', self.http.request.get_method())
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