Prevent a Variant Attribute Choice from displaying on product page

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The manufacturers product number (MPN) is required in order for products to appear in Google Shopping (according to the Google Rep).  A product with multiple variants, however, will have multiple MPNs, so I added an MPN column to the variant section rather than adding it in the Google Shopping App.  That causes the MPN to appear as a choice on the product page.  "SKU" is there, but those don't show as choices on the product page.  Aside from creating an individual product for each variant, is there a way to keep the MPN drop down menu from appearing on the product page?  I'd like MPN to work like SKU does in the variant section.  Open to other solutions.  Thanks.