abis.c: Remove dead code
abis.c: Remove dead code

telenoobie/osmo-bts,telenoobie/osmo-bts,geosphere/osmo-bts,osmocom/osmo-bts,shimaore/osmo-bts,shimaore/osmo-bts,tacooper/osmo-bts,shimaore/osmo-bts,geosphere/osmo-bts,tacooper/osmo-bts,shimaore/osmo-bts,telenoobie/osmo-bts,geosphere/osmo-bts,osmocom/osmo-bts,geosphere/osmo-bts,osmocom/osmo-bts,telenoobie/osmo-bts