frontend: data: update

Signed-off-by: Ralf Zerres <ralf.zerres@networkx.de>

frontend/src/data.rs

@@ -1,38 +1,7 @@
 use orbtk::prelude::*;
 
 use chrono::NaiveDateTime;
-//use serde::de;
 use serde::{Deserialize, Serialize};
-//use std::fmt;
-
-/*
-struct NaiveDateTimeVisitor;
-
-impl<'de> de::Visitor<'de> for NaiveDateTimeVisitor {
-    type Value = NaiveDateTime;
-
-    fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
-	write!(formatter, "a string represents chrono::NaiveDateTime")
-    }
-
-    fn visit_str<E>(self, s: &str) -> Result<Self::Value, E>
-    where
-	E: de::Error,
-    {
-	match NaiveDateTime::parse_from_str(s, "%Y-%m-%dT%H:%M:%S.%f") {
-	    Ok(t) => Ok(t),
-	    Err(_) => Err(de::Error::invalid_value(de::Unexpected::Str(s), &self)),
-	}
-    }
-}
-
-fn from_timestamp<'de, D>(d: D) -> Result<NaiveDateTime, D::Error>
-where
-    D: de::Deserializer<'de>,
-{
-    d.deserialize_str(NaiveDateTimeVisitor)
-}
-*/
 
 /// Structure used to verify a policy data element.
 #[derive(Default, Debug, Clone, Deserialize, Serialize)]