child themes

New to WP i hope its an easy one. I am working on a child theme and i want to disable a javascript file from the parent folder instead of deleting it .

i have a function.php file in my child theme folder but dont now how to do it.

so in my parent folder i have this file in my js folder –> jquery.tipsy.js and i am whiling to ignore it in my child theme what is the best way to do this?

hope i made sense thank you Daniel