They arent technically installed - any unopened programs will take you to the app centre so you can download it - shouldnt be taking up any room really. As for removing the icon - no idea, you can hide it though
How can I delete certain programs or apps that came on the phone I'll never use?
I understand some of them when you highlight the icon and click the blackberry menu key it gives the delete option.
What about programs like Yahoo Chat, Google Talk, Flickr, etc. I don't get that "delete" option when I try that.
How can these be deleted/removed/uninstalled to free space?
i've always used blackberry desktop manager to both add and remove programs without a problem. try it through that, i'm not sure if there's an easier way or not, it's the only way i know!