fix: chain: remove unnecessary error check

[fsgerse]

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Before you mark the PR ready for review, please make sure that:

• Commits have a clear commit message.
• PR title is in the form of of <PR type>: <area>: <change being made>
  • example: fix: mempool: Introduce a cache for valid signatures
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  • area, e.g. api, chain, state, mempool, multisig, networking, paych, proving, sealing, wallet, deps
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