Remove duplicated comments

config/environments/development.js.example

@@ -100,8 +100,6 @@ var config = {
     // Supported labels: 'user_id', 'user_password' (both read from redis)
     ,postgres_auth_pass: '<%= user_password %>'
     ,postgres: {
-        // Parameters to pass to datasource plugin of mapnik
-        // See http://github.com/mapnik/mapnik/wiki/PostGIS
         user: "test_windshaft_publicuser",
         user: "publicuser",
         password: "public",

config/environments/production.js.example

@@ -100,8 +100,6 @@ var config = {
     // Supported labels: 'user_id', 'user_password' (both read from redis)
     ,postgres_auth_pass: '<%= user_password %>'
     ,postgres: {
-        // Parameters to pass to datasource plugin of mapnik
-        // See http://github.com/mapnik/mapnik/wiki/PostGIS
         user: "publicuser",
         password: "public",
         host: '127.0.0.1',

config/environments/staging.js.example

@@ -100,8 +100,6 @@ var config = {
     // Supported labels: 'user_id', 'user_password' (both read from redis)
     ,postgres_auth_pass: '<%= user_password %>'
     ,postgres: {
-        // Parameters to pass to datasource plugin of mapnik
-        // See http://github.com/mapnik/mapnik/wiki/PostGIS
         user: "publicuser",
         password: "public",
         host: '127.0.0.1',

config/environments/test.js.example

@@ -100,8 +100,6 @@ var config = {
     // Supported labels: 'user_id', 'user_password' (both read from redis)
     ,postgres_auth_pass: 'test_windshaft_cartodb_user_<%= user_id %>_pass'
     ,postgres: {
-        // Parameters to pass to datasource plugin of mapnik
-        // See http://github.com/mapnik/mapnik/wiki/PostGIS
         user: "test_windshaft_publicuser",
         password: "public",
         host: '127.0.0.1',