INT: remove superfluous RIOT files (#493)

Author: dwdougherty

content/integrate/riot/_index.md

@@ -10,6 +10,7 @@ categories:
 description: Redis Input/Output Tools
 group: mig
 hidden: false
+hideListLinks: true
 linkTitle: RIOT
 summary: Redis Input/Output Tools (RIOT) is a command-line utility designed to help
   you get data in and out of Redis.

content/integrate/riot/architecture.md

@@ -0,0 +1,9 @@
+---
+description: RIOT documentation
+linkTitle: Documentation
+title: Documentation
+type: integration
+weight: 4
+---
+
+Full documentation for RIOT is available at [redis.github.io/riot](https://redis.github.io/riot/).