Revert "Made Url serde-compatible"

This reverts commit 3cb52a83013e228ed0fd7d33b7cf125607409fd9.

src/calendar.rs

@@ -2,7 +2,6 @@ use std::convert::TryFrom;
 use std::error::Error;
 
 use url::Url;
-use serde::{Deserialize, Serialize};
 
 use crate::task::Task;
 use crate::task::TaskId;
@@ -10,7 +9,6 @@ use crate::task::TaskId;
 use bitflags::bitflags;
 
 bitflags! {
-    #[derive(Serialize, Deserialize)]
     pub struct SupportedComponents: u8 {
         /// An event, such as a calendar meeting
         const EVENT = 1;
@@ -47,10 +45,9 @@ impl TryFrom<minidom::Element> for SupportedComponents {
 
 
 /// A Caldav Calendar
-#[derive(Clone, Debug, PartialEq, Serialize, Deserialize)]
+#[derive(Clone, Debug)]
 pub struct Calendar {
     name: String,
-    #[serde(with="crate::utils::url_serde")]
     url: Url,
     supported_components: SupportedComponents,
 

src/utils.rs

@@ -1,7 +1,6 @@
 ///! Some utility functions
 
 use minidom::Element;
-use serde::Deserialize;
 
 /// Walks an XML tree and returns every element that has the given name
 pub fn find_elems<S: AsRef<str>>(root: &Element, searched_name: S) -> Vec<&Element> {
@@ -51,27 +50,3 @@ pub fn print_xml(element: &Element) {
 
     writer.write(&[0x0a]);
 }
-
-
-/// Used to (de)serialize url::Url
-pub mod url_serde{
-    use super::*;
-
-    pub fn deserialize<'de, D>(deserializer: D) -> Result<url::Url, D::Error>
-    where
-        D: serde::de::Deserializer<'de>
-    {
-        let s = String::deserialize(deserializer)?;
-        match url::Url::parse(&s) {
-            Ok(u) => Ok(u),
-            Err(_) => { return Err(serde::de::Error::invalid_value(serde::de::Unexpected::Str(&s), &"Expected an url")); }
-        }
-    }
-
-    pub fn serialize<S>(u: &url::Url, serializer: S) -> Result<S::Ok, S::Error>
-    where
-        S: serde::ser::Serializer,
-    {
-        serializer.serialize_str( u.as_str() )
-    }
-}