chore: removes obsolete attribution

[bartoszmajsak]

Description

raw_resources.go originally came from kfdef plugin version, where the code was based on k8utils.go attributed to Bitnami.

Since then code has been entirely rewritten, so this license header is not relevant anymore. This commit removes it.

How Has This Been Tested?

Screenshot or short clip

Merge criteria

• [x] You have read the contributors guide.
• [x] Commit messages are meaningful - have a clear and concise summary and detailed explanation of what was changed and why.
• [x] Pull Request contains a description of the solution, a link to the JIRA issue, and to any dependent or related Pull Request.
• [ ] ~Testing instructions have been added in the PR body (for PRs involving changes that are not immediately obvious).~
• [x] The developer has manually tested the changes and verified that the changes work

[openshift-ci[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: zdtsw

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