feat(terraform): remove 3 WalletConnect node operators from EU

[xDarksome]

Description

These deployments have been removed from the keyspace already.

How Has This Been Tested?

Not tested

Due Diligence

• Breaking change
• Requires a documentation update
• Requires a e2e/integration test update

[claude]

Claude finished @xDarksome's task in 1m 11s —— View job

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Todo List

• Analyze PR changes
• Review Terraform configuration changes
• Check for orphaned files
• Scan for external URLs
• Report findings

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Review Findings

Issue 1: Orphaned SOPS Configuration Files

The PR removes 3 operator configurations from Terraform but their SOPS secret files remain:

Files to remove:

• infra/mainnet/sops/eu.wallet-connect-3.json
• infra/mainnet/sops/eu.wallet-connect-4.json
• infra/mainnet/sops/eu.wallet-connect-5.json

Rationale: These files are referenced via sops_file_path = "${path.module}/sops/eu.${each.key}.json" in the module configuration (line 260). Since wallet-connect-3, wallet-connect-4, and wallet-connect-5 are removed from local.eu_operators, these SOPS files are no longer used and should be deleted to maintain consistency and avoid confusion.

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Issue 2: VPC CIDR Overlap Documentation

All 3 removed operators used vpc_cidr_octet = 0 (10.0.0.0/16), which is the same CIDR block. This configuration would cause VPC CIDR conflicts if deployed simultaneously. While the PR description states these were already removed from the keyspace (suggesting they may never have been fully deployed), this raises questions about the configuration's validity.

Recommendation: If these were test/placeholder configurations that were never deployed, consider adding a comment in the PR description to clarify this context for future reference.

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