Using cleanup

PerfectNumbers.Core/PrimeOrderCalculator.Cpu.cs

@@ -1,12 +1,8 @@
-using System;
 using System.Buffers;
-using System.Buffers.Binary;
-using System.Collections.Generic;
 using System.Diagnostics;
 using System.Numerics;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
-using System.Threading;
 using PerfectNumbers.Core.Gpu;
 
 namespace PerfectNumbers.Core;