Description

This pull request simplifies the testutil/network/network.go file by removing retry logic and related dependencies when creating a new test network. The code now directly creates the network without attempting to handle "address already in use" errors, reflecting a move toward simpler and more deterministic test setup.

What cosmos SDK v0.52+ actually did (and v0.53.x has):
In init(), the SDK now pre-allocates a portPool of 200 free TCP ports by calling FreeTCPAddr() for each (bind → get port → release), then uses those ports when creating test validators. This eliminates the race condition entirely — the workaround is no longer needed.

Dependency cleanup:

• Removed unused imports: context, strings, and github.com/tokenize-x/tx-tools/pkg/retry. [1] [2]

Test setup simplification:

• Replaced the retry-based network creation logic in New with a direct call to network.New, eliminating the workaround for port conflicts.

Reviewers checklist:

• Try to write more meaningful comments with clear actions to be taken.
• Nit-picking should be unblocking. Focus on core issues.

Authors checklist

• Provide a concise and meaningful description
• Review the code yourself first, before making the PR.
• Annotate your PR in places that require explanation.
• Think and try to split the PR to smaller PR if it is big.

This change is