remove SubscribeButton and 3rd party deps

packages/_nova-subscribe-to-posts/lib/components/SubscribeButton.jsx

@@ -1,40 +0,0 @@
-import React, { PropTypes, Component } from 'react';
-import { intlShape } from 'react-intl';
-import Subscribe from './Subscribe.jsx';
-
-class SubscribeButton extends Subscribe {
-
-  render() {
-    const post = this.props.post;
-    const user = this.context.currentUser;
-
-    // can't subscribe to own post (also validated on server side)
-    if(user && post.author === user.username) {
-      return null;
-    }
-
-    let btnStyle = "default";
-    let btnTitle = "posts.subscribe";
-    let btnIcon  = "eye";
-
-    let isSubscribed = this.isSubscribed(post, user);
-    if( isSubscribed ) {
-      btnStyle = "info";
-      btnTitle = "posts.unsubscribe";
-      btnIcon  = "eye-slash";
-    }
-
-    return (
-      <button type="button" title={this.context.intl.formatMessage({id: btnTitle})}
-        className={`btn btn-${btnStyle} btn-sm`}
-        style={{padding: '.5rem', lineHeight: 1, borderRadius: '50%', marginLeft: '.5rem'}}
-        onClick={this.onSubscribe} >
-        <i className={`fa fa-${btnIcon}`}></i>
-      </button>
-    )
-  }
-
-}
-
-module.exports = SubscribeButton;
-export default SubscribeButton;

packages/_nova-subscribe-to-posts/lib/export.js

@@ -1,10 +1,8 @@
 import {subscribeItem, unsubscribeItem} from './methods.js';
 import Subscribe from './components/Subscribe.jsx';
-import SubscribeButton from './components/SubscribeButton.jsx';
 
 export {
   subscribeItem,
   unsubscribeItem,
-  Subscribe,
-  SubscribeButton
+  Subscribe
 }

packages/_nova-subscribe-to-posts/package.js

@@ -17,10 +17,7 @@ Package.onUse(function (api) {
   api.use([
     'nova:core@0.26.5-nova',
     'nova:posts@0.26.5-nova',
-    'nova:users@0.26.5-nova',
-
-    // 3rd party
-    'fortawesome:fontawesome@4.5.0'
+    'nova:users@0.26.5-nova'
   ]);
 
   // api.use([