Hi,
OK just wanted to make sure right click would not work, so you removed the linked files in the toolbar, thus now your system will not be able to locate those relevant files. This means you have two routes to remove as the question marks in the toolbar that have taken place of the file's icons.
1. You can either restore the moved or deleted files.
2. Or remove the links from the toolbar by holding the Command key while dragging it off the toolbar.