training: nasconde la sezione Agenda

Rimosso il render di <Agenda /> (e l'import) da /training. Il componente
Agenda.astro resta disponibile per riuso.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/pages/training.astro

@@ -2,7 +2,6 @@
 import Base from '../layouts/Base.astro';
 import PageHero from '../components/PageHero.astro';
 import TrainingCards from '../components/home/TrainingCards.astro';
-import Agenda from '../components/Agenda.astro';
 import { Image } from 'astro:assets';
 import { trainings } from '../data/trainings';
 import T from '../components/content/T.astro';
@@ -35,8 +34,6 @@ export const prerender = false;
       ))}
     </div>
   </section>
-
-  <Agenda />
 </Base>
 
 <style>