What do you mean by "bookmark wizard"? Can you post a screenshot?

.........

Hopefully, someone can. I don't know what you mean by "import wizard" either.

You can right-click this import button and click "Remove from Toolbar" or use the customize page and drag it to the Customize palette.

• https://support.mozilla.org/en-US/kb/customize-firefox-controls-buttons-and-toolbars

Here's a screenshot of the "Import bookmarks" tab and the mysterious window it opens,called IMPORT WIZARD

Note that this is the same "Import Wizard" window that opens if you use "Import from Another Browser..." in the File menu and in "Import & Backup" in the Bookmarks Manager (Library).

• https://support.mozilla.org/en-US/kb/import-data-another-browser