Fix mypy violations (with mypy-0.920)

setup.py

@@ -44,7 +44,7 @@
     'lint': [
         'flake8>=3.5.0',
         'isort',
-        'mypy>=0.900',
+        'mypy>=0.920',
         'docutils-stubs',
         "types-typed-ast",
         "types-pkg_resources",

sphinx/builders/gettext.py

@@ -180,7 +180,7 @@ def write_doc(self, docname: str, doctree: nodes.document) -> None:
 
 class LocalTimeZone(tzinfo):
     def __init__(self, *args: Any, **kwargs: Any) -> None:
-        super().__init__(*args, **kwargs)  # type: ignore
+        super().__init__(*args, **kwargs)
         self.tzdelta = tzdelta
 
     def utcoffset(self, dt: datetime) -> timedelta:

sphinx/util/__init__.py

@@ -153,7 +153,7 @@ def md5(data=b'', **kwargs):
     """
 
     try:
-        return hashlib.md5(data, **kwargs)  # type: ignore
+        return hashlib.md5(data, **kwargs)
     except ValueError:
         return hashlib.md5(data, **kwargs, usedforsecurity=False)  # type: ignore
 
@@ -167,7 +167,7 @@ def sha1(data=b'', **kwargs):
     """
 
     try:
-        return hashlib.sha1(data, **kwargs)  # type: ignore
+        return hashlib.sha1(data, **kwargs)
     except ValueError:
         return hashlib.sha1(data, **kwargs, usedforsecurity=False)  # type: ignore
 

sphinx/util/inspect.py

@@ -355,7 +355,7 @@ def is_singledispatch_function(obj: Any) -> bool:
     if (inspect.isfunction(obj) and
             hasattr(obj, 'dispatch') and
             hasattr(obj, 'register') and
-            obj.dispatch.__module__ == 'functools'):
+            obj.dispatch.__module__ == 'functools'):  # type: ignore
         return True
     else:
         return False

sphinx/util/logging.py

@@ -118,7 +118,7 @@ class SphinxLoggerAdapter(logging.LoggerAdapter):
     """LoggerAdapter allowing ``type`` and ``subtype`` keywords."""
     KEYWORDS = ['type', 'subtype', 'location', 'nonl', 'color', 'once']
 
-    def log(self, level: Union[int, str], msg: str, *args: Any, **kwargs: Any) -> None:
+    def log(self, level: Union[int, str], msg: str, *args: Any, **kwargs: Any) -> None:  # type: ignore # NOQA
         if isinstance(level, int):
             super().log(level, msg, *args, **kwargs)
         else: