How to hide variant dropdown when only one product option
You can hide the variant dropdown on the product page when there is only 1 option (1 variant) with the Konversion theme.
Go to Customize Theme > Product Pages (section) > Scroll to Hide variants with only one option.
This is useful if you don't want to display any dropdown for products having only the "Default title" as option or only the size "medium" as a variant.