fix: remove malformed test_formatting.tf causing CI failures (#213)

Remove test_formatting.tf file with intentional syntax errors that was causing terraform validation failures in CI workflows across all branches and PRs.

This file contained malformed HCL syntax that prevented terraform init and validate from running successfully, blocking all terraform-related CI checks.

The file was added for testing pre-commit workflows but should not be committed to the repository as it breaks terraform validation for the entire project.

Author: lgallard