The Bootloader integration scenario comes already configured with at least one COM boot source. This means that the boot source references an already existing ComManager session, which can have HTTP as the underlying protocol for transferring the application image.
In this case, besides ComManager, there are other components that are configured in order to have Ethernet traffic flow. Follow the next steps for completely removing the network boot support:
After following these steps, you must regenerate the project and go again through the build process.