diff --git a/crates/core_simd/tests/helpers/lanewise.rs b/crates/core_simd/tests/helpers/lanewise.rs
deleted file mode 100644
index 3a9f47968080..000000000000
--- a/crates/core_simd/tests/helpers/lanewise.rs
+++ /dev/null
@@ -1,61 +0,0 @@
-//! These helpers provide a way to easily emulate a vectorized SIMD op on two SIMD vectors,
-//! except using scalar ops that iterate through each lane, one at a time, so as to remove
-//! the vagaries of compilation.
-//!
-//! Do note, however, that when testing that vectorized operations #[should_panic], these
-//! "scalarized SIMD ops" will trigger scalar code paths that may also normally panic.
-
-pub fn apply_unary_lanewise<T1: Copy, T2: Copy, V1: AsRef<[T1]>, V2: AsMut<[T2]> + Default>(
-    x: V1,
-    f: impl Fn(T1) -> T2,
-) -> V2 {
-    let mut y = V2::default();
-    assert_eq!(x.as_ref().len(), y.as_mut().len());
-    for (x, y) in x.as_ref().iter().zip(y.as_mut().iter_mut()) {
-        *y = f(*x);
-    }
-    y
-}
-
-pub fn apply_binary_lanewise<T: Copy, V: AsRef<[T]> + AsMut<[T]> + Default>(
-    a: V,
-    b: V,
-    f: impl Fn(T, T) -> T,
-) -> V {
-    let mut out = V::default();
-    let out_slice = out.as_mut();
-    let a_slice = a.as_ref();
-    let b_slice = b.as_ref();
-    for (o, (a, b)) in out_slice.iter_mut().zip(a_slice.iter().zip(b_slice.iter())) {
-        *o = f(*a, *b);
-    }
-    out
-}
-
-pub fn apply_binary_scalar_rhs_lanewise<T: Copy, V: AsRef<[T]> + AsMut<[T]> + Default>(
-    a: V,
-    b: T,
-    f: impl Fn(T, T) -> T,
-) -> V {
-    let mut out = V::default();
-    let out_slice = out.as_mut();
-    let a_slice = a.as_ref();
-    for (o, a) in out_slice.iter_mut().zip(a_slice.iter()) {
-        *o = f(*a, b);
-    }
-    out
-}
-
-pub fn apply_binary_scalar_lhs_lanewise<T: Copy, V: AsRef<[T]> + AsMut<[T]> + Default>(
-    a: T,
-    b: V,
-    f: impl Fn(T, T) -> T,
-) -> V {
-    let mut out = V::default();
-    let out_slice = out.as_mut();
-    let b_slice = b.as_ref();
-    for (o, b) in out_slice.iter_mut().zip(b_slice.iter()) {
-        *o = f(a, *b);
-    }
-    out
-}
diff --git a/crates/core_simd/tests/helpers/mod.rs b/crates/core_simd/tests/helpers/mod.rs
index b128f8251ca3..41b4fea9d95d 100644
--- a/crates/core_simd/tests/helpers/mod.rs
+++ b/crates/core_simd/tests/helpers/mod.rs
@@ -1,4 +1,2 @@
 #[macro_use]
 pub mod biteq;
-
-pub mod lanewise;