Cleanup README

Remove remaining OUTPUT mentioning part

Author: faif

README.md

@@ -98,17 +98,12 @@ Add "Examples in Python ecosystem" section if you know some. It shows how patter
 [facade.py](patterns/structural/facade.py) has a good example of detailed description,
 but sometimes the shorter one as in [template.py](patterns/behavioral/template.py) would suffice.
 
-In some cases class-level docstring with doctest would also help (see [adapter.py](patterns/structural/adapter.py))
-but readable OUTPUT section is much better.
-
-
 ##### Python 2 compatibility
 To see Python 2 compatible versions of some patterns please check-out the [legacy](https://github.com/faif/python-patterns/tree/legacy) tag.
 
 ##### Update README
 When everything else is done - update corresponding part of README.
 
-
 ##### Travis CI
 Please run `tox` or `tox -e ci37` before submitting a patch to be sure your changes will pass CI.