remove docstring-convention and update comment
[flake8]
min-version = 2.7
accept-encodings = utf-8
-docstring-convention = numpy
-# flake8 errors we ignore. See https://www.flake8rules.com/
+# errors we ignore; see https://www.flake8rules.com/ for more info
ignore =
# pycodestyle errors
E121, # continuation line under-indented for hanging indent
