There's a couple settings you'll have to apply to the image to prevent those icons.
When configuring your image, go to settings and then privacy.
Automatic installation of sponsored apps - set to disabled
Automatically install suggested apps - set to disabled
Occasionally show suggestions in start - set to disabled
Pre-installed apps - set to disabled
Pre-installed OEM apps - set to disabled
Show me suggested content in the settings app - set to disabled
The bold one is most likely the setting causing your exact issue, but you'll want to disable the other 5 as well, as they will cause problems if you want to be rid of the built in apps (especially if you don't want to get rid of the store).