bug: remove dead Twitter link (#148)

Author: AshKyd

data/amsterdam.yaml

@@ -44,7 +44,6 @@ speakers:
     twitterLink: jayne_mast
     githubLink: jayne-mast
   - name: Ash Kyd
-    twitterLink: ashkyd
     githubLink: ashkyd
   - name: Ives van Hoorne
     twitterLink: CompuIves

data/online-2020-16.yaml

@@ -31,7 +31,6 @@ mainOrganizer:
     githubLink: pixelyunicorn
   - name: Ash Kyd
     email: ash@kyd.com.au
-    twitterHandle: ashkyd
 organizers:
   - name: Paola Ducolin
     twitterHandle: PolaDuco