refactor(testing): delete the dead validation.sh shell sweep

Both runners now validate through run_testinfra_validation, so the shell sweep validation.sh ran is dead. Delete run_all_validations, validate_all_services, run_full_validation, the ~35 validate_* checks, and validation_pass/fail/warn/skip (called only by those checks). Keep the live helpers the runners and testinfra.sh still use: ssh_cmd, attribute_issue, capture_pre/post_install_state, analyze_log_diff, categorize_errors, generate_issue_report, and the VALIDATION_* counters plus issue arrays. The file drops from 1156 lines to 314.

Closes the P5 follow-up from the Testinfra cutover.

0 files changed, 0 insertions, 0 deletions