A VBA project password can be removed with a hex editor.
Close the workbook and open the workbook file in the hex editor.
Find the string “DPB” and change it to “DPx“. Save the file. Open the workbook and click OK until the workbook is open (one or more dialogs are displayed describing various problems with the VBA project).
Press ALT+F11, choose the menu command Tools->VBAProject Properties, navigate to the Protection tab, and change the password but do not remove it (note the new password).
Save, close, and re-open the workbook. Press ALT+F11 and enter the new password.
Choose Tools->VBAProject Properties, navigate to the Protection tab, and remove the password.
Save the workbook.