diff --git a/vortex-expr/src/fields.rs b/vortex-expr/src/fields.rs
deleted file mode 100644
index 230e509bcd..0000000000
--- a/vortex-expr/src/fields.rs
+++ /dev/null
@@ -1,9 +0,0 @@
-#[cfg(test)]
-mod test {
-    use crate::expression_fns::field;
-
-    #[test]
-    fn test_cant_negate_field() {
-        field("id").minus().expect_err("cannot negate field");
-    }
-}