diff --git a/VContainer/Assets/VContainer/Runtime/Internal/FreeList.cs b/VContainer/Assets/VContainer/Runtime/Internal/FreeList.cs
deleted file mode 100644
index cef77354..00000000
--- a/VContainer/Assets/VContainer/Runtime/Internal/FreeList.cs
+++ /dev/null
@@ -1,192 +0,0 @@
-// using System;
-// using System.Collections.Generic;
-// using System.Runtime.InteropServices;
-//
-// namespace VContainer.Internal
-// {
-//     public class FreeList<T> where T : class
-//     {
-//         public int LastIndex => lastIndex;
-//         public bool IsDisposed => lastIndex == -2;
-//
-//         readonly object gate = new();
-//         T?[] values;
-//         int lastIndex = -1;
-//
-//         public FreeList(int initialCapacity)
-//         {
-//             values = new T[initialCapacity];
-//         }
-//
-//         public ReadOnlySpan<T?> AsSpan()
-//         {
-//             if (lastIndex < 0)
-//             {
-//                 return ReadOnlySpan<T?>.Empty;
-//             }
-//             return values.AsSpan(0, lastIndex + 1);
-//         }
-//
-//         public T? this[int index] => values[index];
-//
-//         public void Add(T item)
-//         {
-//             lock (gate)
-//             {
-//                 CheckDispose();
-//
-//                 // try find blank
-//                 var index = FindNullIndex(values);
-//                 if (index == -1)
-//                 {
-//                     // full, 1, 4, 6,...resize(x1.5)
-//                     var len = values.Length;
-//                     var newValues = new T[len + len / 2];
-//                     Array.Copy(values, newValues, len);
-//                     values = newValues;
-//                     index = len;
-//                 }
-//
-//                 values[index] = item;
-//                 if (lastIndex < index)
-//                 {
-//                     lastIndex = index;
-//                 }
-//             }
-//         }
-//
-//         public void RemoveAt(int index)
-//         {
-//             lock (gate)
-//             {
-//                 if (index < values.Length)
-//                 {
-//                     ref var v = ref values[index];
-//                     if (v == null) throw new KeyNotFoundException($"key index {index} is not found.");
-//
-//                     v = null;
-//                     if (index == lastIndex)
-//                     {
-//                         lastIndex = FindLastNonNullIndex(values, index);
-//                     }
-//                 }
-//             }
-//         }
-//
-//         public bool Remove(T value)
-//         {
-//             lock (gate)
-//             {
-//                 if (lastIndex < 0) return false;
-//
-//                 var index = -1;
-//                 var span = values.AsSpan(0, lastIndex + 1);
-//                 for (var i = 0; i < span.Length; i++)
-//                 {
-//                     if (span[i] == value)
-//                     {
-//                         index = i;
-//                         break;
-//                     }
-//                 }
-//
-//                 if (index != -1)
-//                 {
-//                     RemoveAt(index);
-//                     return true;
-//                 }
-//             }
-//             return false;
-//         }
-//
-//         public void Clear()
-//         {
-//             lock (gate)
-//             {
-//                 if (lastIndex > 0)
-//                 {
-//                     values.AsSpan(0, lastIndex + 1).Clear();
-//                     lastIndex = -1;
-//                 }
-//             }
-//         }
-//
-//         public void Dispose()
-//         {
-//             lock (gate)
-//             {
-//                 lastIndex = -2; // -2 is disposed.
-//             }
-//         }
-//
-//         void CheckDispose()
-//         {
-//             if (IsDisposed)
-//             {
-//                 throw new ObjectDisposedException(GetType().FullName);
-//             }
-//         }
-//
-//     #if NET6_0_OR_GREATER
-//
-//         static int FindNullIndex(T?[] target)
-//         {
-//             var span = MemoryMarshal.CreateReadOnlySpan(
-//                 ref UnsafeHelper.As<T?, IntPtr>(ref MemoryMarshal.GetArrayDataReference(target)), target.Length);
-//             return span.IndexOf(IntPtr.Zero);
-//         }
-//
-//     #else
-//
-//         static unsafe int FindNullIndex(T?[] target)
-//         {
-//             ref var head = ref UnsafeHelper.As<T?, IntPtr>(ref MemoryMarshal.GetReference(target.AsSpan()));
-//             fixed (void* p = &head)
-//             {
-//                 var span = new ReadOnlySpan<IntPtr>(p, target.Length);
-//
-//     #if NETSTANDARD2_1
-//                 return span.IndexOf(IntPtr.Zero);
-//     #else
-//                 for (int i = 0; i < span.Length; i++)
-//                 {
-//                     if (span[i] == IntPtr.Zero) return i;
-//                 }
-//                 return -1;
-//     #endif
-//             }
-//         }
-//
-//     #endif
-//
-//     #if NET8_0_OR_GREATER
-//
-//         static int FindLastNonNullIndex(T?[] target, int lastIndex)
-//         {
-//             var span = MemoryMarshal.CreateReadOnlySpan(
-//                 ref UnsafeHelper.As<T?, IntPtr>(ref MemoryMarshal.GetArrayDataReference(target)), lastIndex); // without lastIndexed value.
-//             var index = span.LastIndexOfAnyExcept(IntPtr.Zero);
-//             return index; // return -1 is ok(means empty)
-//         }
-//
-//     #else
-//
-//         static unsafe int FindLastNonNullIndex(T?[] target, int lastIndex)
-//         {
-//             ref var head = ref UnsafeHelper.As<T?, IntPtr>(ref MemoryMarshal.GetReference(target.AsSpan()));
-//             fixed (void* p = &head)
-//             {
-//                 var span = new ReadOnlySpan<IntPtr>(p, lastIndex); // without lastIndexed value.
-//
-//                 for (var i = span.Length - 1; i >= 0; i--)
-//                 {
-//                     if (span[i] != IntPtr.Zero) return i;
-//                 }
-//
-//                 return -1;
-//             }
-//         }
-//
-//     #endif
-//     }
-// }
diff --git a/VContainer/Assets/VContainer/Runtime/Internal/FreeList.cs.meta b/VContainer/Assets/VContainer/Runtime/Internal/FreeList.cs.meta
deleted file mode 100644
index 7caa2a00..00000000
--- a/VContainer/Assets/VContainer/Runtime/Internal/FreeList.cs.meta
+++ /dev/null
@@ -1,3 +0,0 @@
-fileFormatVersion: 2
-guid: ab65b7c977d342df8c7b3d914e896b30
-timeCreated: 1715093149
\ No newline at end of file