diff --git a/src/rust/util.rs b/src/rust/util.rs
index 3c8fd9eca6..5186ec6564 100644
--- a/src/rust/util.rs
+++ b/src/rust/util.rs
@@ -4,9 +4,6 @@ pub trait SafeToU8 {
 pub trait SafeToU16 {
     fn safe_to_u16(self) -> u16;
 }
-pub trait SafeToI32 {
-    fn safe_to_i32(self) -> i32;
-}
 
 impl SafeToU8 for u16 {
     fn safe_to_u8(self) -> u8 {
@@ -57,20 +54,6 @@ impl SafeToU16 for usize {
     }
 }
 
-impl SafeToI32 for u32 {
-    fn safe_to_i32(self) -> i32 {
-        dbg_assert!(self <= ::std::i32::MAX as u32);
-        self as i32
-    }
-}
-
-impl SafeToI32 for usize {
-    fn safe_to_i32(self) -> i32 {
-        dbg_assert!(self <= ::std::i32::MAX as usize);
-        self as i32
-    }
-}
-
 #[allow(dead_code)]
 pub const DEBUG: bool = cfg!(debug_assertions);