Cleanup stale todos

[yashrajshuklaaa]

Description

Combines two small cleanup changes (previously #2830 and a separate nodepool.go PR, merged per reviewer request):

1. Removes an unused, commented-out validate() function stub and its TODO comment in state_manager.go.
   Never implemented, nothing references it.
2. Removes a stale // TODO: add unit tests comment in nodepool.go.
   Test coverage already exists in nodepool_test.go (6 test functions).

No functional changes in either commit.

Testing

go build ./... and full test suite for controllers and internal/state packages, all pass.

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ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: QUIET

Plan: Enterprise

Run ID: 280acea8-e322-4db2-9a2a-c2bb7fd10368

📥 Commits

Reviewing files that changed from the base of the PR and between fa49ea6 and 52fb781.

📒 Files selected for processing (2)

• controllers/state_manager.go
• internal/state/nodepool.go

💤 Files with no reviewable changes (2)

• controllers/state_manager.go
• internal/state/nodepool.go

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📝 Walkthrough

Walkthrough

Removed an obsolete commented-out ClusterPolicyController.validate placeholder from controllers/state_manager.go. Removed an obsolete unit-test TODO from internal/state/nodepool.go. No public declarations or runtime behavior changed.

Merge Risk: ⚪ Minimal · up to 52fb7

This change removes obsolete TODOs and an unused code stub without changing behavior; no actionable merge-blocking risk remains after normal checks and review.

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[yashrajshuklaaa]

@rahulait done! ptal