uncommented the upcoming event in index.md

Author: sunito

index.md

@@ -2,11 +2,13 @@
 
 ## Upcoming events
 
+Currently, there is no event planned.
+<!-- 
 Our next meetup will be on **June 17th** at 7 pm. As usual, at [WIAS](https://www.wias-berlin.de/). 
 
 Perhaps, the construction work will be finished by then, otherwise it will be on the **4th floor** again. \
 At the entrance, there is a registration book for guests. Enter Dr. Fuhrmann as the person to be visited.
-
+-->
 ## Regular meeting
 
 **Date/Time :** We usually meet every **3rd Tuesday** of the month at 19:00.