Minor code cleanup

libmat2/abstract.py

@@ -35,12 +35,12 @@ class AbstractParser(abc.ABC):
 
     @abc.abstractmethod
     def get_meta(self) -> Dict[str, Union[str, dict]]:
-        pass  # pragma: no cover
+        """Return all the metadata of the current file"""
 
     @abc.abstractmethod
     def remove_all(self) -> bool:
         """
+        Remove all the metadata of the current file
+
         :raises RuntimeError: Raised if the cleaning process went wrong.
         """
-        # pylint: disable=unnecessary-pass
-        pass  # pragma: no cover

libmat2/parser_factory.py

@@ -7,13 +7,10 @@ from typing import TypeVar, List, Tuple, Optional
 
 from . import abstract, UNSUPPORTED_EXTENSIONS
 
-assert Tuple  # make pyflakes happy
-
 T = TypeVar('T', bound='abstract.AbstractParser')
 
 mimetypes.add_type('application/epub+zip', '.epub')
-# EPUB Navigation Control XML File
-mimetypes.add_type('application/x-dtbncx+xml', '.ncx')
+mimetypes.add_type('application/x-dtbncx+xml', '.ncx')  # EPUB Navigation Control XML File
 
 
 def __load_all_parsers():