base: Remove duplicated key handling

Change-Id: Ifd8ecac2b3758f0c6a4dbaa39350831af0b145a0
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>
base: added national roaming info for Pepephone in Spain

Users of Pepephone in Spain (MCC 214 MNC 06) can roam on Vodafone ES (MCC 214 MNC 01).

Change-Id: I462e8b6bc7ffdc8bdfc92765178f960c71c8009d