diff --git a/src/trello/model/auth.rs b/src/trello/model/auth.rs
index 1761616..8a9eab4 100644
--- a/src/trello/model/auth.rs
+++ b/src/trello/model/auth.rs
@@ -1,9 +1,7 @@
-use std::collections::HashMap;
 //
 use derive_more::derive::Display;
 
 use crate::newtype;
-use crate::trello::TrelloConfig;
 
 newtype!(TrelloApiKey, String, Display, PartialOrd, Ord, "API Key");
 newtype!(
@@ -20,22 +18,3 @@ pub(crate) struct TrelloAuth<'cfg> {
     pub(crate) api_key: &'cfg TrelloApiKey,
     pub(crate) api_secret: &'cfg TrelloApiSecret,
 }
-impl<'cfg> From<&'cfg TrelloConfig> for TrelloAuth<'cfg> {
-    fn from(value: &'cfg TrelloConfig) -> Self {
-        TrelloAuth {
-            api_key: &value.api_key,
-            api_secret: &value.api_secret,
-        }
-    }
-}
-impl From<TrelloAuth<'_>> for HashMap<String, String> {
-    fn from(value: TrelloAuth) -> Self {
-        HashMap::from([(
-            "Authorization".into(),
-            format!(
-                r#"OAuth oauth_consumer_key="{}", oauth_token="{}""#,
-                value.api_key, value.api_secret
-            ),
-        )])
-    }
-}