chore: use bytes.Equal instead

[testwill]

Description

Fixes # (issue)

Type of change

• Bug fix
• New feature
• Breaking change
• Refactoring
• Document changes
• Test changes

How to reproduce it (if it is a bug-fix PR)

• Env: x86-64, CentOS-7.4, kernel-3.10.0, GO-1.10.1, etc.

• Step-1:

• Step-2:

The solution (to fix a bug, implement a new feature etc.)

Checklist:

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