Remove require pry

Author: estolfo

spec/spec_helper.rb

@@ -20,7 +20,6 @@
 Mongo::Logger.logger = Logger.new($stdout)
 Mongo::Logger.logger.level = Logger::INFO
 
-require 'pry-nav'
 require 'support/travis'
 require 'support/matchers'
 require 'support/authorization'