Remove FAQ entry about pytest warnings

The issue was resolved and for older versions, or use of the old style
there is an explanation of how to deal with things in loader.rst.

docs/source/faq.rst

@@ -21,16 +21,6 @@ Is gabbi only for testing Python-based APIs?
 No, you can use :doc:`gabbi-run <runner>` to test an HTTP service
 built in any programming language.
 
-Workarounds
-~~~~~~~~~~~
-
-pytest produces warnings about yield tests. Can I make them stop?
------------------------------------------------------------------
-
-Yes, run as ``py.test --disable-pytest-warnings`` to quiet the
-warnings. Or use a version of pytest less than ``3.0``. For more details
-see :ref:`pytest <pytest_loader>`.
-
 Testing Style
 ~~~~~~~~~~~~~