The toolbar you refer to is probably the one called the Favorites Bar and I believe it's an Internet Explorer thing rather than a Google one.

When you add a link to Favorites, you have the option of adding the site to your list of favorites, or of adding it to the toolbar (if the bar is displayed). It's handy to have a few links you use often on the bar so that you don't have to scroll through the list where you keep "links to everything."

It's fairly easy to mis-click and put something you intended to put on your list land on the bar instead. Since you may have intended to put the links in the list, you might want to check whether they may also be where you wanted them before removing the ones on the bar(?)

IF THIS IS THE BAR YOU MEAN all you have to do is right click on the link name/icon on the bar and then click Delete to remove that link.

If you're using IE(?): I keep the Menu Bar displayed, showing File - Edit - View - Favorites etc. If you have it displayed, you can click View and hover on Toolbars to drop a list down. Check or uncheck "Favorites Bar" to display or hide the entire bar.

If you don't have the Menu Bar displayed, right clicking to the right of the bar where the "tabs" stick up (in a blank space) will get you the same list of bars you can turn on or off.

If you're using something other than IE, you're on your own, but something similar should work. If you're talking about some other bar (in IE) you'll need to explain which it is to confuse me better.

John