remove go.mod files from examples

[Umang01-hash]

Pull Request Template

Description:

• Remove go.mod files from remaining examples.

Checklist:

• I have formatted my code using goimport and golangci-lint.
• All new code is covered by unit tests.
• This PR does not decrease the overall code coverage.
• I have reviewed the code comments and documentation for clarity.

Thank you for your contribution!

[ccoVeille]

Remove go.mod files from remaining examples.

This is the "what?", but nothing explain the "why?"

I mean, you explain what the commit is about, but I have no idea why you do such changes

[Umang01-hash]

Remove go.mod files from remaining examples.

This is the "what?", but nothing explain the "why?"

I mean, you explain what the commit is about, but I have no idea why you do such changes

Did it regarding this comment:

#1225 (comment)