Remove duplicate twitter account details

Author: MelissaKaulfuss

data/events/2026/melbourne/main.yml

@@ -43,8 +43,6 @@ event_social_twitter: "devopsdownunder" # Change this to the twitter handle for
 event_social_mastodon: "https://mastodon.social/@devopsdownunder" # Change this to url to your mastodon page
 event_social_bsky: "https://bsky.app/profile/devopsdownunder.bsky.social" # Change this to url to your bluesky page
 event_social_youtube: "devopsdownunder" # Change this to the youtube channel handle for your event such as devopsdaysrox
-# legacy
-event_twitter: "devopsdownunder" # This will create a traditional "Follow" twitter button. Change this to the twitter handle for your event such as devopsdayschi or devopsdaysmsp.
 
 nav_elements: # List of pages you want to show up in the navigation of your page.
  # - name: propose