Update examples to use new bootstrap tooltip

examples/overlay.html

@@ -6,7 +6,6 @@ docs: >
   <p>The popups are created using <a href="https://getbootstrap.com/docs/5.2/components/popovers/">Popovers</a> from Bootstrap.</p>
 tags: "overlay, popup, bootstrap, popover"
 resources:
-  - https://code.jquery.com/jquery-3.5.1.min.js
   - https://cdn.jsdelivr.net/npm/bootstrap@5.2.0/dist/css/bootstrap.min.css
   - https://cdn.jsdelivr.net/npm/bootstrap@5.2.0/dist/js/bootstrap.bundle.min.js
 ---
@@ -16,5 +15,5 @@ resources:
   <a class="overlay" id="vienna" target="_blank" href="https://en.wikipedia.org/wiki/Vienna">Vienna</a>
   <div id="marker" title="Marker"></div>
   <!-- Popup -->
-  <div id="popup" title="Welcome to OpenLayers"></div>
+  <div id="popup"></div>
 </div>