refactor(precompiles): Remove unused type aliases and dead code in context.go

[Aleksandr1732]

Cleanup of unused code in precompiles/context.go by removing redundant type aliases and an unnecessary linter suppression.

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[github-actions]

Thank you for your contribution. However, this PR has been automatically closed because it was labeled as trivial. As stated in our CONTRIBUTING.md:

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Important

Please, do not send pull requests for trivial changes; these will be rejected.
These types of pull requests incur a cost to reviewers and do not provide much value to the project.
If you are unsure, please open an issue first to discuss the change.
Here are some examples of trivial PRs that will most-likely be rejected:

• Fixing typos
• AI-generated code
• Refactors that don't improve usability

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