If you've uninstalled Visually app from Shopify without first disabling themes as instructed here, you can manually remove the Visually code to fully remove Visually from your store's themes in your Shopify account. Here's how:
1. Navigate to Themes section in your Shopify account
2. Click on Customize
3. Click on the three dots icon located above the side navigation menu on the left side
4. Click on Edit Code
5. Click on the theme.liquid option
6. Remove the following script from the top of the code and save the change
Important Information
If you've tested different themes with Visually, please also delete the script from the header of those tested themes as well.