A simpler impl for ByteArrayEqualityComparer and remove redundant impl

[nan01ab]

A better and simpler impl for ByteArrayEqualityComparer:

1. Use SeqenceEqual for better performance and simpler implementation;
   Perf test on 4KiB equal bytes:

BenchmarkDotNet v0.13.12, macOS Ventura 13.7 (22H123) [Darwin 22.6.0]
Intel Core i7-8750H CPU 2.20GHz (Coffee Lake), 1 CPU, 12 logical and 6 physical cores
.NET SDK 8.0.203
  [Host]     : .NET 8.0.3 (8.0.324.11423), X64 RyuJIT AVX2
  DefaultJob : .NET 8.0.3 (8.0.324.11423), X64 RyuJIT AVX2


| Method                            | Mean     | Error   | StdDev  |
|---------------------------------- |---------:|--------:|--------:|
| TestByteArrayEquals_SequenceEqual | 102.2 ns | 2.03 ns | 2.26 ns |
| TestByteArrayEquals_Unsafe        | 268.5 ns | 3.41 ns | 3.02 ns |

2. Remove duplicated implementations;

Type of change

• Optimization (the change is only an optimization)
• Style (the change is only a code style for better maintenance or standard purpose)
• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules

[shargon]

Wait for #3503