Yes. You can customise which product types are included within the product drop down menu of the Plan Summary step of the review and recommendation sections via your Advice Options & Reasons Library.
Within your Advice Options & Reasons library, select the section containing the product you wish to hide, then select the Plan Summary step and the product types for that step will be displayed something like this:
Let's assume I wish to hide enterprise investment scheme - I uncheck show and it will be instantly removed from the product drop down menu of the Investment Recommendation section.
If you're an administrator of a Company or Group Plan this will also remove the provider from both the libraries and the provider drop down menus of your account users or any accounts linked to your group.