Remove remnants of Neo4J

.env.production.sample

@@ -6,8 +6,6 @@ DB_USER=postgres
 DB_NAME=postgres
 DB_PASS=
 DB_PORT=5432
-NEO4J_HOST=neo4j
-NEO4J_PORT=7474
 
 # Federation
 LOCAL_DOMAIN=example.com

.travis.yml

@@ -11,8 +11,6 @@ env:
     - LOCAL_DOMAIN=cb6e6126.ngrok.io
     - LOCAL_HTTPS=true
     - RAILS_ENV=test
-    - NEO4J_HOST=localhost
-    - NEO4J_PORT=7575
 
 addons:
   postgresql: 9.4

README.md

@@ -60,8 +60,6 @@ Consult the example configuration file, `.env.production.sample` for the full li
 
 - PostgreSQL
 - Redis
-- Neo4J (optional)
-  - GraphAware NodeRank
 
 ## Running with Docker and Docker-Compose