Disabling UploadKit on your live theme
If you want to set UploadKit on an unpublished theme, but not have the upload buttons show up on your live theme, you will find that UploadKit reinstalls your embed code automatically if you remove it from your theme's main layout/theme.liquid file. This can be inconvenient if you're upgrading to UploadKit from another app and want to get everything set up before switching over.
To stop this, open your live theme's layout/theme.liquid, go to the bottom and find the line:
{% include 'uploadkit' %}
Change it to:
{% comment %}{% include 'uploadkit' %}{% endcomment %}
... and save.