Where to Reset the Top Menu?

Hello, can someone tell me how to “reset” the Top Menu (Accounts, Persons, Opportunities etc…) to the standard.

I made a upgrade from SugarCRM CE to SuiteCRM 7.8. and now want to have back all Items in the Top Menu.

I have a customized Menu “Sales” with only 3 Subitems.

Right of the Sales Menu i have a “All” Menu with all Items of SuiteCRM.

How do i delete these specially configured “Sales” Menu again?
I do not find it in the “Admin Section”

Can you hleb me?