lib.FileContext.get(): Remove bogus owner, group, mode

owner, group or mode don't belong in .get()'s signature, remove them.
Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/lib/FileContext.py

@@ -156,9 +156,6 @@ class FileContext(abc.ABC):
         throw: bool = True,
         verbose: bool|None = None,
         title: str=None,
-        owner: str|None=None,
-        group: str|None=None,
-        mode: str|None=None,
     ) -> Result:
         ret = await self._get(
             self._chroot(path),