Removed the unused retrieve_status() utility from the Mia core application.

mia_core/status.py

@@ -59,20 +59,6 @@ def get_previous_post(request):
     return status["form"]
 
 
-def retrieve_status(request):
-    """Retrieves the previously-stored status.
-
-    Args:
-        request (HttpRequest): The request.
-
-    Returns:
-        dict: The previously-stored status.
-    """
-    if "s" not in request.GET:
-        return None
-    return _retrieve(request, request.GET["s"])
-
-
 def _store(request, status):
     """Stores the status into the session, and returns the status ID that can
     be used to retrieve the status later with retrieve().