Move StaticVec definition to lib.rs.

src/utils.rs

@@ -21,8 +21,6 @@ use crate::stdlib::collections::hash_map::DefaultHasher;
 #[cfg(feature = "no_std")]
 use ahash::AHasher;
 
-use smallvec::SmallVec;
-
 /// A hasher that only takes one single `u64` and returns it as a hash key.
 ///
 /// # Panics
@@ -93,11 +91,6 @@ pub fn calc_fn_hash<'a>(
     s.finish()
 }
 
-/// _[INTERNALS]_ Alias to [`smallvec::SmallVec<[T; 4]>`](https://crates.io/crates/smallvec),
-/// which is a specialized `Vec` backed by a small, fixed-size array when there are <= 4 items stored.
-/// Exported under the `internals` feature only.
-pub type StaticVec<T> = SmallVec<[T; 4]>;
-
 /// The system immutable string type.
 ///
 /// An `ImmutableString` wraps an `Rc<String>` (or `Arc<String>` under the `sync` feature)