Revert "base: added national roaming info for Play in Poland"

This reverts commit fe738cb731dfe41a7fc11d8faf41d0b37195aae2.
Revert "core: added national roaming info for Free Mobile in France"

This reverts commit b05b480adad7e46c02656da1a112bae6d0b74221.
Revert "National roaming info for Drei in Austria"

This reverts commit fdcc0ee89667cfbb85a5b620625199522309ab8d.