Delete the unnecessary attributes.

cookbooks/prometheus-exporters/attributes.rb

@@ -2,14 +2,6 @@
 # Specifying the default settings:
 # -------------------------------------------
 node.reverse_merge!({
-  'prometheus' => {
-    'manager' => false,
-    'url' => 'https://github.com/prometheus/prometheus/releases/download/',
-    'prefix' => 'prometheus-',
-    'postfix' => '.linux-amd64.tar.gz',
-    'storage' => '/opt/prometheus/',
-    'location' => '/usr/local/bin/'
-  },
   'node_exporter' => {
     'url' => 'https://github.com/prometheus/node_exporter/releases/download/',
     'prefix' => 'node_exporter-',
@@ -24,20 +16,6 @@ node.reverse_merge!({
     'storage' => '/opt/blackbox_exporter/bin/',
     'location' => '/usr/local/bin/'
   },
-  'alertmanager' => {
-    'url' => 'https://github.com/prometheus/alertmanager/releases/download/',
-    'prefix' => 'alertmanager-',
-    'postfix' => '.linux-amd64.tar.gz',
-    'storage' => '/opt/prometheus/',
-    'location' => '/usr/local/bin/'
-  },
-  'alertmanager_webhook' => {
-    'url' => 'https://github.com/tomtom-international/alertmanager-webhook-logger/releases/download/',
-    'prefix' => 'alertmanager-webhook-logger-',
-    'postfix' => '.tar.gz',
-    'storage' => '/opt/prometheus/',
-    'location' => '/usr/local/bin/'
-  },
   'filestat_exporter' => {
     'url' => 'https://github.com/michael-doubez/filestat_exporter/releases/download/',
     'prefix' => 'filestat_exporter-',