Remove unrequired become: true

roles/bugbot/tasks/main.yml

@@ -4,7 +4,6 @@
   pacman: name=python-irc,python-beautifulsoup4,python-lxml state=present
 
 - name: receive valid signing keys
-  become: true
   command: /usr/bin/gpg --keyserver keys.openpgp.org --auto-key-locate wkd,keyserver --locate-keys {{ item }}
   with_items: '{{ bugbot_pgp_emails }}'
   register: gpg