Delete compatibility.md (parse-community#800)

* Delete compatibility.md

Removing not relevant/outdated Parse.com session

* Update parse-server.md

Author: alyssoncm

_includes/parse-server/compatibility.md

@@ -20,7 +20,6 @@ sections:
 - "parse-server/cache-adapters.md"
 - "parse-server/live-query.md"
 - "parse-server/third-party-auth.md"
-- "parse-server/compatibility.md"
 - "parse-server/MongoRocks.md"
 - "parse-server/MongoReadPreference.md"
 - "parse-server/development.md"