removed unused statements.
On branch master
modified:   example/config-get-example.js
modified:   lib/commands/connection.js
modified:   lib/commands/lists.js
modified:   lib/commands/pubsub.js
modified:   lib/commands/scripting.js
modified:   lib/commands/server.js
modified:   lib/commands/sets.js
modified:   lib/commands/sortedsets.js
modified:   lib/commands/strings.js
modified:   lib/commands/transactions.js