Fix excerpts on blog posts

source/_posts/2018-11-20-drupalcamp-london-2019-tickets.md

@@ -1,5 +1,6 @@
 ---
 title: DrupalCamp London 2019 - Tickets Available and Call for Sessions
+excerpt: DrupalCamp London early-bird tickets are now available, and their call for sessions is open.
 date: 2018-11-20 23:00
 tags:
     - conferences
@@ -8,11 +9,8 @@ tags:
     - drupalcamp-london
 has_tweets: true
 ---
-{% block excerpt %}
 It was announced this week that [early-bird tickets are now available][0] for [DrupalCamp London 2019][1], as well as their [call for sessions being open][2].
-{% endblock %}
 
-{% block content %}
 {% include 'tweet' with {
     content: '<p lang="en" dir="ltr">The time is finally here. You can now purchase your tickets. Early Bird finishes on 2nd January 2019 - <a href="https://t.co/aG6jstmWzv">https://t.co/aG6jstmWzv</a> <a href="https://twitter.com/hashtag/Drupal?src=hash&amp;ref_src=twsrc%5Etfw">#Drupal</a></p>&mdash; DrupalCamp London (@DrupalCampLDN) <a href="https://twitter.com/DrupalCampLDN/status/1064584179113971712?ref_src=twsrc%5Etfw">November 19, 2018</a>
 ',
@@ -27,7 +25,6 @@ _Note: I am not an organiser of DrupalCamp London, nor am I involved with the se
 Hopefully there will be no [#uksnow][3] this year!
 
 DrupalCamp London is the 1-3 March 2019. Early bird tickets are available until 2 January 2019, and the call for sessions is open until 21 January.
-{% endblock %}
 
 [0]: https://twitter.com/DrupalCampLDN/status/1064584179113971712
 [1]: https://drupalcamp.london