Remove tweets from talks

source/_talks/building-static-websites-sculpin.md

@@ -6,7 +6,6 @@ speakerdeck:
     ratio: "1.77777777777778"
     url: https://speakerdeck.com/opdavies/building-static-websites-with-sculpin
 code: https://github.com/opdavies/sculpin-demo
-tweets: yes
 video:
     type: youtube
     id: axy6ltc9meA

source/_talks/dancing-for-drupal.md

@@ -1,7 +1,6 @@
 ---
 title: Dancing for Drupal
 description: A talk on Drupal, presented alongside others representing Umbraco, Sitecore and Episerver.
-tweets: yes
 speakerdeck:
     id: ffa9b6dea6dc4a8eb207b9982ed6e1bd
     ratio: "1.33333333333333"

source/_talks/drupal-8-module-development.md

@@ -1,7 +1,6 @@
 ---
 title: Getting Started with Drupal 8 Module Development
 description: How to build your first module for Drupal 8.
-tweets: yes
 code: https://github.com/opdavies/dclondon16-d8-module
 speakerdeck:
     id: 0041804e52664d12a8e31cd118264813

source/_talks/drupal-8.md

@@ -10,7 +10,6 @@ speakerdeck:
 video:
     type: youtube
     id: 36zCxPrOOzM
-tweets: yes
 events:
     -
         name: PHP South West

source/_talks/git-flow.md

@@ -8,7 +8,6 @@ speakerdeck:
 video:
     type: youtube
     id: T-miCpHxfds
-tweets: yes
 events:
     -
         name: DrupalCamp London 2014

source/_talks/test-drive-twig-with-sculpin.md

@@ -6,7 +6,6 @@ speakerdeck:
     ratio: "1.77777777777778"
     url: https://speakerdeck.com/opdavies/test-drive-twig-with-sculpin
 code: https://github.com/opdavies/sculpin-demo
-tweets: yes
 events:
     -
         name: DrupalCamp North 2015