moved cache updates to default settings role

tasks/main.yml

diff --git a/tasks/main.yml b/tasks/main.yml
index 378b03d..9e9ad90 100644
--- a/tasks/main.yml
+++ b/tasks/main.yml
@@ -12,9 +12,6 @@
 
 - include: cassandra.yml
 
-- include: postgres.yml
-  when: "{{ groups['pgmaster'] is defined and groups['pgstandby'] is defined }}"
-
 - name: Construct the silent-install file
   template:
     src: 'silent-install.conf.j2'

tasks/postgres.yml

diff --git a/tasks/postgres.yml b/tasks/postgres.yml
deleted file mode 100644
index fe6690a..0000000
--- a/tasks/postgres.yml
+++ /dev/null
@@ -1,48 +0,0 @@
----
-- block:
-  - name: Obtain pgmaster IP for DC 2, if not provided
-    set_fact:
-      pgmaster_ip: "{{ hostvars[groups['dc-2-pgmaster'][0]][interface_name].ipv4.address }}"
-    when: pgmaster_ip is not defined
-
-  - name: Obtain pgstandby IP for DC 2, if not provided
-    set_fact:
-      pgstandby_ip: "{{ hostvars[groups['dc-2-pgstandby'][0]][interface_name].ipv4.address }}"
-    when: pgstandby_ip is not defined
-
-  - name: Set pgmaster_ip for DC 2, in cache, if defined
-    cache:
-      key: pgmaster_ip
-      value: '{{ pgmaster_ip }}'
-    when: pgmaster_ip is defined
-
-  - name: Set pgstandby_ip for DC 2, in cache, if defined
-    cache:
-      key: pgstandby_ip
-      value: '{{ pgstandby_ip }}'
-    when: pgstandby_ip is defined
-
-  when: "{{ groups['dc-2-pgmaster'] is defined and groups['dc-2-pgstandby'] is defined and inventory_hostname in groups['dc-2'] }}"
-
-- block:
-  - name: Obtain pgmaster IP for DC 1, if not provided
-    set_fact:
-      pgmaster_ip: "{{ hostvars[groups['dc-1-pgmaster'][0]][interface_name].ipv4.address }}"
-    when: pgmaster_ip is not defined and groups['dc-1-pgmaster'] is defined
-
-  - name: Obtain pgstandby IP for DC 1, if not provided
-    set_fact:
-      pgstandby_ip: "{{ hostvars[groups['dc-1-pgstandby'][0]][interface_name].ipv4.address }}"
-    when: pgstandby_ip is not defined
-
-  - name: Set pgmaster_ip for DC 1, in cache, if defined
-    cache:
-      key: pgmaster_ip
-      value: '{{ pgmaster_ip }}'
-
-  - name: Set pgstandby_ip for DC 1, in cache, if defined
-    cache:
-      key: pgstandby_ip
-      value: '{{ pgstandby_ip }}'
-
-  when: "{{ groups['dc-1-pgmaster'] is defined and groups['dc-1-pgstandby'] is defined and inventory_hostname in groups['dc-1'] }}"