You have the option to disable the annotations or the size chart on each of your products.
‍
Navigate to a product page with the ‘Annotate new product’ button.
‍
At the bottom of your screen, there will be two options beside the “Preview Design” button: Enable Annotations, and Enable Size Chart.
‍
These are both enabled by default for each product. If you don’t want your customers to see either of these, disable by unchecking the options.