Duplicate lines of code in Connection.js

[babakness]

When looking around this code I noticed a duplicate

https://github.com/mikemintz/rethinkdb-websocket-server/blob/master/src/Connection.js#L29
https://github.com/mikemintz/rethinkdb-websocket-server/blob/master/src/Connection.js#L45

Perhaps I'm missing something here?

[mikemintz]

Good catch! Feel free to open a PR removing the second line.