Remova o MongoDB do Mac
$ launchctl list | grep mongo
$ launchctl remove homebrew.mxcl.mongodb
$ pkill -f mongod
$ brew uninstall mongodb
Marton
$ launchctl list | grep mongo
$ launchctl remove homebrew.mxcl.mongodb
$ pkill -f mongod
$ brew uninstall mongodbrm -rf /usr/local/var/mongodbrm -rf /data/db