fix(base): remove property decorator

Author: h2non

filetype/types/base.py

@@ -19,11 +19,9 @@ def mime(self):
     def extension(self):
         return self.__extension
 
-    @property
     def is_extension(self, extension):
         return self.__extension is extension
 
-    @property
     def is_mime(self, mime):
         return self.__mime is mime