Update upcoming_hackathons.yml

Author: DCGenomics

_data/upcoming_hackathons.yml

@@ -2,11 +2,7 @@
   loc: "ADVERTISE YOUR HACKATHON ON THIS PAGE!"
   link: https://goo.gl/forms/BijIwPgPo7nhtdG03
   community:
-  
-- date: "March 3-5, 2023"
-  loc: "Breast Cancer Hackathon Challenge 2023"
-  link: https://www.u-hackmed.org/2023bchack/breast-cancer-hackathon-challenge-2023
-  community access:  
+ 
 
 - date: "May 15-16, 2023"
   loc: "2023 Bio-IT World FAIR Data Hackathon"