[nat] Remove the imsi allow option on the nat level.

For now we have:
1.) bsc imsi deny to deny at the BSC level
2.) bsc imsi allow to allow a SIM at the BSC level
3.) nat imsi deny to deny at the global level
4 files changed
tree: 2f0f61f2dfa92cddc361a2e0acbeb03da057a829
  1. hlrsync/
  2. linux-kernel/
  3. openbsc/
  4. wireshark/