Remove redundant "randomize" feature gate.

It comes immediately after another gate.

compiler/rustc_abi/src/layout.rs

@@ -871,16 +871,12 @@ fn univariant(
         // the field ordering to try and catch some code making assumptions about layouts
         // we don't guarantee.
         if repr.can_randomize_type_layout() && cfg!(feature = "randomize") {
-            #[cfg(feature = "randomize")]
-            {
-                // `ReprOptions.layout_seed` is a deterministic seed we can use to randomize field
-                // ordering.
-                let mut rng = Xoshiro128StarStar::seed_from_u64(repr.field_shuffle_seed.as_u64());
-
-                // Shuffle the ordering of the fields.
-                optimizing.shuffle(&mut rng);
-            }
-            // Otherwise we just leave things alone and actually optimize the type's fields
+            // `ReprOptions.layout_seed` is a deterministic seed we can use to randomize field
+            // ordering.
+            let mut rng = Xoshiro128StarStar::seed_from_u64(repr.field_shuffle_seed.as_u64());
+
+            // Shuffle the ordering of the fields.
+            optimizing.shuffle(&mut rng);
         } else {
             // To allow unsizing `&Foo<Type>` -> `&Foo<dyn Trait>`, the layout of the struct must
             // not depend on the layout of the tail.