diff --git a/core/engine/src/builtins/temporal/plain_date/mod.rs b/core/engine/src/builtins/temporal/plain_date/mod.rs
index d5540b171fa..d71572606b2 100644
--- a/core/engine/src/builtins/temporal/plain_date/mod.rs
+++ b/core/engine/src/builtins/temporal/plain_date/mod.rs
@@ -45,18 +45,6 @@ impl PlainDate {
     }
 }
 
-// impl IsoDateSlots for JsObject<PlainDate> {
-//     fn iso_date(&self) -> temporal_rs::iso::IsoDate {
-//         self.borrow().data().inner.iso_date()
-//     }
-// }
-
-// impl GetTemporalCalendar for JsObject<PlainDate> {
-//     fn get_calendar(&self) -> Calendar {
-//         self.borrow().data().inner.get_calendar()
-//     }
-// }
-
 impl BuiltInObject for PlainDate {
     const NAME: JsString = StaticJsStrings::PLAIN_DATE_NAME;
 }
diff --git a/core/engine/src/builtins/temporal/plain_date_time/mod.rs b/core/engine/src/builtins/temporal/plain_date_time/mod.rs
index ef5c82cf6d9..e288b49f017 100644
--- a/core/engine/src/builtins/temporal/plain_date_time/mod.rs
+++ b/core/engine/src/builtins/temporal/plain_date_time/mod.rs
@@ -52,18 +52,6 @@ impl PlainDateTime {
     }
 }
 
-// impl IsoDateSlots for JsObject<PlainDateTime> {
-//     fn iso_date(&self) -> IsoDate {
-//         self.borrow().data().inner.iso_date()
-//     }
-// }
-
-// impl GetTemporalCalendar for JsObject<PlainDateTime> {
-//     fn get_calendar(&self) -> Calendar {
-//         self.borrow().data().inner.get_calendar()
-//     }
-// }
-
 impl BuiltInObject for PlainDateTime {
     const NAME: JsString = StaticJsStrings::PLAIN_DATETIME_NAME;
 }
diff --git a/core/engine/src/builtins/temporal/plain_month_day/mod.rs b/core/engine/src/builtins/temporal/plain_month_day/mod.rs
index 6235e163d55..81e9eb2c620 100644
--- a/core/engine/src/builtins/temporal/plain_month_day/mod.rs
+++ b/core/engine/src/builtins/temporal/plain_month_day/mod.rs
@@ -115,18 +115,6 @@ impl PlainMonthDay {
     }
 }
 
-// impl IsoDateSlots for JsObject<PlainMonthDay> {
-//     fn iso_date(&self) -> temporal_rs::iso::IsoDate {
-//         self.borrow().data().inner.iso_date()
-//     }
-// }
-
-// impl GetTemporalCalendar for JsObject<PlainMonthDay> {
-//     fn get_calendar(&self) -> Calendar {
-//         self.borrow().data().inner.get_calendar()
-//     }
-// }
-
 impl BuiltInObject for PlainMonthDay {
     const NAME: JsString = StaticJsStrings::PLAIN_MD_NAME;
 }
diff --git a/core/engine/src/builtins/temporal/plain_year_month/mod.rs b/core/engine/src/builtins/temporal/plain_year_month/mod.rs
index a74c1b5ba26..d18ed31c08f 100644
--- a/core/engine/src/builtins/temporal/plain_year_month/mod.rs
+++ b/core/engine/src/builtins/temporal/plain_year_month/mod.rs
@@ -39,18 +39,6 @@ impl PlainYearMonth {
     }
 }
 
-// impl IsoDateSlots for JsObject<PlainYearMonth> {
-//     fn iso_date(&self) -> temporal_rs::iso::IsoDate {
-//         self.borrow().data().inner.iso_date()
-//     }
-// }
-
-// impl GetTemporalCalendar for JsObject<PlainYearMonth> {
-//     fn get_calendar(&self) -> InnerCalendar {
-//         self.borrow().data().inner.get_calendar()
-//     }
-// }
-
 impl BuiltInObject for PlainYearMonth {
     const NAME: JsString = StaticJsStrings::PLAIN_YM_NAME;
 }