Add command to remove exim4.

debianenv-bootstrap.yml

@@ -16,8 +16,10 @@
     notify:
     - restart rsyslog
     - restart cron
-  - name: Install required things
+  - name: Install required packages
     apt: pkg=most,zsh,vim,vim-scripts,git,subversion,tmux,multitail,mtr-tiny,curl,dnsutils,sudo,gnupg,traceroute,htop state=present
+  - name: Remove exim4
+    apt: pkg=exim4-daemon-light state=absent
   handlers:
     - name: restart rsyslog
       service: name=rsyslog state=restarted