mypy: Move configuration to 'setup.cfg'

Less top-level files = winning [1].

[1] https://mypy.readthedocs.io/en/stable/config_file.html

Signed-off-by: Stephen Finucane <stephen@that.guru>

mypy.ini

@@ -1,7 +0,0 @@
-[mypy]
-python_version = 2.7
-ignore_missing_imports = True
-follow_imports = skip
-incremental = True
-check_untyped_defs = True
-warn_unused_ignores = True

setup.cfg

@@ -28,5 +28,13 @@ max-line-length = 95
 ignore = E116,E241,E251
 exclude = .git,.tox,.venv,tests/*,build/*,sphinx/search/*,sphinx/pycode/pgen2/*,doc/ext/example*.py
 
+[mypy]
+python_version = 2.7
+ignore_missing_imports = True
+follow_imports = skip
+incremental = True
+check_untyped_defs = True
+warn_unused_ignores = True
+
 [build_sphinx]
 warning-is-error = 1