How to remove the arrows on default wp theme

Hello,
I’m trying to remove the arrow’s on the default wordpress theme.
I was able to remove them but I still can’t seem to get the category name currently “Uncategorized” under “Categories” to line up right underneath.

I edited the code;

.entry ul li:before, #sidebar ul ul li:before {
content: “”;
}

and that’s what I have at the moment..

can someone please help me.

thanks so much