remove notice for maintenance break

data/index.md

@@ -6,14 +6,6 @@ information_page: true
 banner: true
 sidebar_priority: 7000
 ---
-<notice>
-tmc.mooc.fi will be down for maintenance on <b>Tuesday, August 20</b> starting at <b>2 PM (UTC+3)</b> for about 2 hours. During this time, you won’t be able to:
-<ul>
-    <li>Submit exercise answers</li>
-    <li>Log in</li>
-    <li>Create accounts</li>
-</ul>
-</notice>
 
 **The course starts on January 15th 2024.**