Remove support for Debian 9 and Ubuntu 16.04

roles/php-fpm/tasks/Ubuntu.yml

@@ -1,36 +0,0 @@
----
-
-- block:
-  - name: Set php-fpm packages
-    set_fact:
-      php_fpm_packages:
-        - php7.0-fpm
-        # for WordPress
-        - php7.0-mysql
-        - php7.0-gd
-        - php7.0-curl
-        # for Piwik
-        - php7.0-mbstring
-        - php7.0-xml
-
-  - name: Install php7.0-fpm and deps
-    apt: name={{ php_fpm_packages }} state=present update_cache=yes
-
-  # only copy php-fpm config for vhosts that need WordPress or PHP
-  - name: Copy php-fpm pool config
-    template: src=php7.0-pool.conf.j2 dest=/etc/php/7.0/fpm/pool.d/{{ item.domain_name }}.conf owner=root group=root mode=0644
-    loop: "{{ nginx_vhosts }}"
-    when: (item.has_wordpress is defined and item.has_wordpress) or (item.needs_php is defined and item.needs_php)
-    notify: reload php7.0-fpm
-
-  - name: Remove default www pool
-    file: path=/etc/php/7.0/fpm/pool.d/www.conf state=absent
-    notify: reload php7.0-fpm
-
-  # re-configure php.ini
-  - name: Update php.ini
-    template: src=php7.0-php.ini.j2 dest=/etc/php/7.0/fpm/php.ini owner=root group=root mode=0644
-    notify: reload php7.0-fpm
-  tags: php-fpm
-
-# vim: set ts=2 sw=2:

roles/php-fpm/tasks/main.yml

@@ -1,12 +1,7 @@
 ---
-# Note: Debian 9's php-fpm config is identical to Ubuntu 16.04's, so for now we
-# can capitalize on that and use the same tasks. Ubuntu 18.04 uses php-fpm 7.2.
-# Debian 10 uses php-fpm 7.3. Ubuntu 20.04 uses PHP 7.4.
-
-- name: Configure php-fpm on Ubuntu 16.04 and Debian 9
-  include_tasks: Ubuntu.yml
-  when: (ansible_distribution == 'Ubuntu' and ansible_distribution_version is version('16.04', '==')) or (ansible_distribution == 'Debian' and ansible_distribution_major_version is version('9', '=='))
-  tags: php-fpm
+# Ubuntu 18.04 uses php-fpm 7.2
+# Debian 10 uses php-fpm 7.3
+# Ubuntu 20.04 uses PHP 7.4
 
 - name: Configure php-fpm on Ubuntu 18.04
   include_tasks: Ubuntu_18.04.yml