refactor: drop unsused usings

Author: unsafePtr

src/Base58Encoding.Benchmarks/BoundsCheckComparisonBenchmark.cs

@@ -1,5 +1,4 @@
 using BenchmarkDotNet.Attributes;
-using BenchmarkDotNet.Columns;
 using BenchmarkDotNet.Diagnosers;
 using BenchmarkDotNet.Jobs;
 using System.Runtime.CompilerServices;
@@ -17,7 +16,6 @@ public class BoundsCheckComparisonBenchmark
     private const int Base = 58;
     private const int MaxStackallocByte = 512;
     private byte[] _testData = null!;
-    private Base58 _base58 = null!;
 
     [Params(TestVectors.VectorType.BitcoinAddress, TestVectors.VectorType.SolanaAddress, TestVectors.VectorType.SolanaTx, TestVectors.VectorType.IPFSHash, TestVectors.VectorType.MoneroAddress, TestVectors.VectorType.FlickrTestData, TestVectors.VectorType.RippleTestData)]
     public TestVectors.VectorType VectorType { get; set; }
@@ -26,7 +24,6 @@ public class BoundsCheckComparisonBenchmark
     public void Setup()
     {
         _testData = TestVectors.GetVector(VectorType);
-        _base58 = Base58.Bitcoin;
     }
 
     [Benchmark(Baseline = true)]

src/Base58Encoding.Benchmarks/CountLeadingCharactersBenchmark.cs

@@ -1,10 +1,7 @@
 using BenchmarkDotNet.Attributes;
-using BenchmarkDotNet.Columns;
 using BenchmarkDotNet.Jobs;
-using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
-using static System.Net.Mime.MediaTypeNames;
 
 namespace Base58Encoding.Benchmarks;
 

src/Base58Encoding.Benchmarks/CountLeadingZerosBenchmark.cs

@@ -1,7 +1,5 @@
 using BenchmarkDotNet.Attributes;
-using BenchmarkDotNet.Columns;
 using BenchmarkDotNet.Jobs;
-using System.Collections.Generic;
 using System.Numerics;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;