feat: remove note below form

[dewabisma]

No description provided.

[n13]

Reviewer model: GPT 5.6 Sol

Verdict: APPROVE — the note removal is complete and consistent, with no blocking findings.

The optional note prop, conditional markup, responsive styles, only call-site use, and launch.signup.micro translations are removed coherently. Both remaining SignupForm call sites compile, and all nine locale schemas remain aligned.

Validation:

• npm run format:check — passed.
• SITE_BASE_URL=http://localhost:3000 npm run build — passed; the build emitted existing unrelated missing-translation warnings and a non-fatal compressor message.
• Targeted locale-key and built-output checks — passed.
• git diff --check 2f8c97e...76c87d4 — passed.
• npm run check:seo-meta — reported 17 pre-existing launch metadata length issues unrelated to this diff.