[CHEF-21374] Removed the licensing changes

[ashiqueps]

Description

This PR will remove the licensing changes introduced for the chef-infra-client 19 which includes the following.

• Removed the kitchen license commands
• Enforcing the license for the kitchen converge and kitchen verify commands.
• Passing the license key to the created node to activate it there.

Related Issue

Types of changes

• 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 change)
• Chore (non-breaking change that does not add functionality or fix an issue)

Checklist:

• I have read the CONTRIBUTING document.
• I have run the pre-merge tests locally and they pass.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• If Gemfile.lock has changed, I have used --conservative to do it and included the full output in the Description above.
• All new and existing tests passed.
• All commits have been signed-off for the Developer Certificate of Origin.

[Stromweld]

I don't think we should remove any of this as it will still be needed for downloads of the chef-client from the commercial api after omnitruck website is shutdown and a license_key is still needed to download the client for a test-kitchen run.

[Stromweld]

see my work on #52 to add support for client downloads from commercial api