Remove Dec. 23 JS2 Maintenance alert (#480)

Author: ktyle

portal/index.md

@@ -9,12 +9,6 @@
 
 <span style="font-size: 2.6rem;">An education and training hub for the geoscientific Python community</span>
 
-<a href="posts/binderhub_status.html" role="button" class="btn btn-light btn-lg" style="display: flex; align-items: center; font-weight: 600; text-decoration: none; background-color: orange; border: rgba(var(--spt-color-dark), 1);">
-         Pythia BinderHub Maintenance Monday Dec. 19, 2024
- </a>
-
-<br><br>
-
 <a href="posts/fundraiser.html" role="button" class="btn btn-light btn-lg" style="display: flex; align-items: center; font-weight: 600; text-decoration: none; background-color: #ccc; border: rgba(var(--spt-color-dark), 1);">
          Donate to support Project Pythia!
  </a>