roles/postfix: Remove the task that install the patchwork script

Since the script was moved to the patchwork role, the script is being
installed there.

roles/postfix/tasks/main.yml

@@ -51,9 +51,5 @@
   notify:
     - reload postfix
 
-- name: install patchwork parsemail wrapper
-  template: src=patchwork-parsemail-wrapper.sh dest=/usr/local/bin/patchwork-parsemail-wrapper.sh mode=0755 owner=root group=root
-  when: postfix_patchwork_enabled
-
 - name: start and enable postfix
   service: name=postfix enabled=yes state=started