reports/mail-bootstrap: drop tls_trust_file note (fixed in vault)
The Linux-path tls_trust_file gotcha was patched in vault source on
2026-04-24, so fresh decrypts won't hit it on macOS anymore. Drop the
section from the report so it doesn't read as still-pending guidance.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>