After you have uninstalled the Bitespeed app, in order to remove all additions made to your theme code, follow these steps:
Go to "Themes" on your Shopify dashboard.
2. Click on "Actions" then "Edit Code".
3. Go to the Snippets folder (You might have to scroll down a bit to find it). Then find and click on the "bitespeed-analytics.liquid" file. When the file opens, click on "Delete File".
4. Then, go to Layout section and open the file "theme.liquid". Now, search for the following tag/code:
{% include 'bitespeed-analytics' %}5. Remove this line. Then, click on Save.
That's it! Now, there are no more Bitespeed analytics code present on your store!