Remove the used code under compiler/transaction

[zhanglei1949]

https://github.com/alibaba/neug/blob/main/include/neug/compiler/transaction/transaction.h
The transaction related code is introduced to compiler, should be removed from our repo.

[github-actions]

🤖 Auto-triage: linked as sub-issue of #86 — Refactor UpdateTransaction (confidence: high).

Reason: The issue requests removal of transaction-related code from the compiler directory, which falls squarely under the UpdateTransaction refactor umbrella (#86) that covers transaction layer cleanup and API surface changes.

Auto-applied: type → Task; labels → transaction

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