bts: Arfcn can never be smaller than 0

Remove the condition because it can never be true.

Fixes: Coverity CID#1307793
1 file changed
tree: 4ab5968d2630a44c4116a13d61fd825d7b2a1be8
  1. debian/
  2. hlrsync/
  3. linux-kernel/
  4. openbsc/
  5. wireshark/
  6. .gitignore
  7. README