Removed PyCharm 2025 discount banner. (#2345)

Author: sarahboyce

djangoproject/templates/base.html

@@ -58,16 +58,7 @@
     </section>
 
     <div id="billboard">
-      {% block billboard %}
-        <div class="banner">
-          <p>
-            <a href="https://www.jetbrains.com/pycharm/promo/support-django/?utm_campaign=pycharm&utm_content=django25&utm_medium=referral&utm_source=dsf-banner">
-              Extended until November 19, 2025, <em class="underlined">get PyCharm for 30% off</em>.
-              All money goes to the <em>Django Software Foundation</em>!
-            </a>
-          </p>
-        </div>
-      {% endblock %}
+      {% block billboard %}{% endblock %}
     </div>
 
     <div class="container {% block layout_class %}{% endblock %}">