To remove a button from a toolbar in the Toolbar Preview pane
- Click Tools
tab
Customization
panel
User
Interface.
At the command prompt,
enter cui. - In the Customize User Interface Editor, Customize tab, in the Customizations In <file name> pane, click the plus sign (+) next to the Toolbar node to expand it.
- Drag
the button in the toolbar’s preview that you want to remove and drop
it outside of the preview.

- Click OK.