Remove code and associated tests and Kconfig related to SETTINGS_USE_BASE64 that was deprecated in Zephyr 2.2 Signed-off-by: Kumar Gala <kumar.gala@linaro.org>
Splitted configuration for NVS & FCB so it is possible for the CI to pick it up. Signed-off-by: Kamil Piszczek <Kamil.Piszczek@nordicsemi.no>