redundant bit of code

src/ship/items/state.rs

@@ -22,7 +22,6 @@ pub enum TriggerCreateItem {
 }
 
 
-
 #[derive(thiserror::Error, Debug)]
 enum ItemStateError {
     #[error("character {0} not found")]
@@ -42,16 +41,8 @@ enum ItemStateError {
     Dummy,
 
     #[error("gateway")]
-    GatewayError(GatewayError),
-}
-
-impl From<GatewayError> for ItemStateError {
-    fn from(other: GatewayError) -> ItemStateError {
-        ItemStateError::GatewayError(other)
+    GatewayError(#[from] GatewayError),
 }
-}
-
-
 
 enum GatewayActions {
     ItemNote(ItemEntityId, ItemNote),