Remove plug_graphql entry (#4906)

This repo has been archived

Author: joshprice

README.md

@@ -777,7 +777,6 @@ There are [other sites with curated lists of elixir packages](#other-awesome-lis
 * [plug_cloudflare](https://github.com/c-rack/plug_cloudflare) - Inspired by mod_cloudflare, this Elixir plug parses Cloudflares CF-Connecting-IP HTTP request header into Plug.Conn's remote_ip field.
 * [plug_forward_peer](https://github.com/awetzel/plug_forwarded_peer) - Very simple plug which reads X-Forwarded-For or Forwarded header according to RFC7239 and fill conn.remote_ip with the root client ip.
 * [plug_fprof](https://github.com/obmarg/plug_fprof) - A Plug that adds fprof tracing to requests, to allow for easy profiling.
-* [plug_graphql](https://github.com/graphql-elixir/plug_graphql) - Phoenix Plug integration for [GraphQL Elixir](http://graphql-elixir.org/).
 * [plug_heartbeat](https://github.com/whatyouhide/plug_heartbeat) - A plug for responding to heartbeat requests.
 * [plug_jwt](https://github.com/bryanjos/plug_jwt) - Plug for JWT authentication.
 * [plug_password](https://github.com/azranel/plug_password) - Plug for adding simple cookie-based authentication.