Many Mastodon apps don't send Content-Type in DELETE, so ignore it.

mastoapi.c

@@ -3008,9 +3008,6 @@ int mastoapi_delete_handler(const xs_dict *req, const char *q_path,
     xs *args      = NULL;
     const char *i_ctype = xs_dict_get(req, "content-type");
 
-    if (i_ctype == NULL)
-        return 0;
-
     if (i_ctype && xs_startswith(i_ctype, "application/json")) {
         if (!xs_is_null(payload))
             args = xs_json_loads(payload);