Remove useless as_str on ID

src/base.rs

@@ -33,7 +33,7 @@ pub trait Type {
 
     /// Returns a `GlobalID` that is unique among all types.
     fn global_id(id: ID) -> ID {
-        base64::encode(format!("{}:{}", Self::type_name(), id.as_str())).into()
+        base64::encode(format!("{}:{}", Self::type_name(), *id)).into()
     }
 
     /// Parse `GlobalID`.

src/scalars/id.rs

@@ -12,13 +12,6 @@ use uuid::Uuid;
 #[derive(Clone, Ord, PartialOrd, Eq, PartialEq, Hash, Debug)]
 pub struct ID(String);
 
-impl ID {
-    /// Gives a string representation of the ID
-    pub fn as_str(&self) -> &str {
-        &self.0
-    }
-}
-
 impl Deref for ID {
     type Target = String;