[yocto] Best way to remove DISTRO_FEATURES?

[Neuer User]

Hi

I have a small custom image based on the core-image-minimal.

Due to some DISTRO features (3g, nfc, a.o.) I get useless packages
included (ofono, neard). What is the best way to remove them?

Can the distro content be changed? Or would I need to build my own
distro? (Which would be not so easy looking at the complex poky.conf
configuration files...)

Thanks

Michael