Remove help entry for dokku ps commmand
Remove help entry for dokku ps commmand

`dokku ps <app>` just seems to print the help content, not "List processes running in app container(s)" as specified
progrium/dokku,claytonbrown/dokku,progrium/dokku,dokku/dokku,progrium/dokku,dokku/dokku,dokku/dokku,progrium/dokku,dokku/dokku,claytonbrown/dokku,claytonbrown/dokku,claytonbrown/dokku,claytonbrown/dokku,claytonbrown/dokku,progrium/dokku,progrium/dokku,progrium/dokku,dokku/dokku,dokku/dokku,dokku/dokku,claytonbrown/dokku,claytonbrown/dokku,progrium/dokku,dokku/dokku