Removes PEP-570 positional-only parameter definition (for Python < 3.8)

Author: Samuel FORESTIER

src/distro/distro.py

@@ -1084,7 +1084,7 @@ def uname_attr(self, attribute: str) -> str:
         return self._uname_info.get(attribute, "")
 
     @staticmethod
-    def __abs_path_join(root_path: str, abs_path: str, /) -> str:
+    def __abs_path_join(root_path: str, abs_path: str) -> str:
         rel_path = os.path.splitdrive(abs_path)[1].lstrip(os.sep)
         if os.altsep is not None:
             rel_path = rel_path.lstrip(os.altsep)