Remove compiling of assets on Heroku, remove custom buildpack

app.json

@@ -15,8 +15,7 @@
         "heroku-postgresql"
     ],
     "env": {
-        "ENV": { "value": "heroku", "description": "Do not modify this value as it's required to work on Heroku." },
-        "BUILDPACK_URL": { "value": "https://github.com/cachethq/cachet-buildpack", "description": "Do not modify this value as it's required to work on Heroku." }
+        "ENV": { "value": "heroku", "description": "Do not modify this value as it's required to work on Heroku." }
     },
     "scripts": {
         "postdeploy": "php artisan migrate --env=heroku; php artisan key:generate;"

composer.json

@@ -56,10 +56,6 @@
             "index-document": "index.php",
             "log-files": [
                 "app/storage/logs/laravel.log"
-            ],
-            "compile": [
-                "bower install",
-                "gulp"
             ]
         }
     },