feat(feed): remove PubSubHubbub support

it sucks

Gruntfile.coffee

@@ -11,7 +11,6 @@ module.exports = (grunt) ->
     gitreset: "grunt-git"
     replace: "grunt-text-replace"
     usebanner: "grunt-banner"
-    pubsubhubbub_publish: "grunt-pubsubhubbub_publish"
 
   # Track tasks load time
   require("time-grunt") grunt
@@ -564,13 +563,6 @@ module.exports = (grunt) ->
         tagMessage: "chore: create tag %VERSION%"
         push: false
 
-    pubsubhubbub_publish:
-      dist:
-        options:
-          hub: "<%= config.cfg.pshh %>"
-
-        hubUrl: "<%= config.cfg.url %><%= config.cfg.base %><%= config.cfg.feed %>"
-
   grunt.registerTask "theme-upgrade", "Upgrade specific theme from AMSF cache to app", [
     "shell:amsf__theme__to_app"
   ]
@@ -686,7 +678,6 @@ module.exports = (grunt) ->
     if grunt.option("deploy")
       grunt.task.run [
         "shell:sync_commit"
-        "pubsubhubbub_publish"
       ]
 
   grunt.registerTask "default", "Default task aka. build task", [

_app/feed-atom.xml

@@ -15,7 +15,6 @@ permalink: /feed.xml
 
   <link rel="alternate" type="text/html" hreflang="en" href="{{ amsf_site_base }}/" />
   <link rel="self" type="application/atom+xml" href="{{ site.feed | prepend: amsf_site_base }}" />
-  <link rel="hub" href="{{ site.pshh }}" />
 
   <author>
     <name>{{ site.data.authors.default.name }}</name>

package.json

@@ -51,7 +51,6 @@
     "grunt-minjson": "^0.3.0",
     "grunt-newer": "^1.1.1",
     "grunt-postcss": "^0.6.0",
-    "grunt-pubsubhubbub_publish": "^0.2.1",
     "grunt-rev": "^0.1.0",
     "grunt-shell": "^1.1.2",
     "grunt-text-replace": "^0.4.0",