Creating a plugin function to remove or modify code

[sal]

So I can't create my own plugin to modify existing code generated by GS? I can do it using CSS display:none; but want to remove it completely from source.

n00dles101 meant for you to check how the Multi-user plugin achieves what you're wanting to do with your plugin. Unfortunately, I'm pretty sure it's just using CSS to hide the respective links which is what you don't want to do.