How to undo wp_enqueue_script?

Is there a way to un-enqueue a script that was included with wp_enqueue_scripts? The parent template uses wp_enqueue_scripts to include jquery, but in the child template, I want to use a different version of jquery. I read somewhere that I am not supposed to edit the parent template directly, so I am wondering if there is something I can add to the child template that will un-enqueue. Any help appreciated!