pytester: avoid a type: ignore

Author: bluetech

src/_pytest/pytester.py

@@ -1229,10 +1229,9 @@ def parseconfig(self, *args: str | os.PathLike[str]) -> Config:
         """
         import _pytest.config
 
-        new_args = self._ensure_basetemp(args)
-        new_args = [str(x) for x in new_args]
+        new_args = [str(x) for x in self._ensure_basetemp(args)]
 
-        config = _pytest.config._prepareconfig(new_args, self.plugins)  # type: ignore[arg-type]
+        config = _pytest.config._prepareconfig(new_args, self.plugins)
         # we don't know what the test will do with this half-setup config
         # object and thus we make sure it gets unconfigured properly in any
         # case (otherwise capturing could still be active, for example)