revert(bootcamp): drop the Black Friday call-out, keep the 6-seat cap

The bootcamp has no Black Friday offer. Remove the .bc-cards call-out block
(16-30 Nov 2026 dates, second hosted year, BF2026 code, six-seats line) and
the OPEN-SLOT(olchi) landing-page comment. No BF string existed in llms.txt
or workshops/index.html. The 6-seat capacity stays: Class size fact row, the
bc-price cap line, CourseInstance maximumAttendeeCapacity: 6, the workshops
card cap + comparison row, and the llms.txt six-participants sentence.

odoo-erp-automation-bootcamp/index.html

@@ -726,13 +726,6 @@
         <p class="bc-note on-dark">
           <strong>Adding capability later:</strong> our guide to <a href="/blog/posts/howto-custom-module.html">installing custom Odoo modules from Git</a> shows both routes — Quick Git for a zip you bought, Git for a developer.
         </p>
-        <ul class="bc-cards">
-          <li>
-            <h3>Black Friday, 16&ndash;30 November 2026.</h3>
-            <p>Book inside the window and a <strong>second year of hosted Odoo Community Edition</strong> is added on top of the year included in the programme, and <strong>$100 comes off</strong> with code <strong>BF2026</strong>. Six seats only.</p>
-            <!-- OPEN-SLOT(olchi): link to the Black Friday landing page -->
-          </li>
-        </ul>
       </div>
     </section>