How to remove remnants of google search

My issue is not with google maps, but with google custom search

I have uninstalled custom google search from my website, but there are still remnants of the plugin on my site, which I would very much like removed.

When you visit and right click in a chrome browser to inspect elements there are some style sheets that relates to google custom search which I would like to be removed.

How can I or can you assist me in getting them removed.