Remove red lines from under sidebar links

Hello,

Could some please tell me how to remove the unsightly red lines from under the links in my sidebar. My site is https://www.parnellpainting.com and I am using the Florilia theme

https://wordpress.pastebin.ca/1006741

I think I have pasted the code for where I would need to make the changes. Please be specific in what I need to change, I am a newbie.

Thanks very much in advance.