Remove explicit DCO Check from InstructLab

Signed-off-by: Courtney Pacheco <[email protected]>

Author: courtneypacheco

docs/ci/ci-remove-dco-check.md

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+# Remove DCO Sign-off Check
+
+## Overview
+
+Presently, all repositories under our `instructlab` GitHub org require contributors to add a [Developer Certificate Origin (DCO)](https://developercertificate.org/) sign-off in each commit to indicate that they agree to the DCO legal terms. While these DCO sign-offs can be a great way for us to validate that a contributor agrees to the DCO legal terms, many upstream projects actively use the DCO without explicitly requiring contributors to add "Signed-off-by" on their commits. So in other words, we can still require contributors to agree to the DCO terms, but we don't necessarily _need_ contributors to add DCO sign-offs in each commit.
+
+## Changes Going Forward
+
+We should add DCO text at the top level of each InstructLab repository and update each repository's `CONTRIBUTING.md` guide to clearly state that anyone who makes a contribution to InstructLab will be implicitly agreeing to the DCO for that particular repository.
+
+To ensure consistency in the way we state our legal message, we should add documentation under our [instructlab/community](https://github.com/instructlab/community) repository and have all other repositories within the `instructlab` GitHub org link to it directly in their `CONTRIBUTING.md` files.