log VTY telnet bind only once

After libosmocore 55dc2edc89c1a85187ef8aafc09f7d922383231f which outputs
'telnet at <ip> <port>' from telnet_init_dynif(), there's no need to log the
telnet VTY bind here anymore.

Change-Id: Icd9e670c1d30c156f7bd5d0d34892150aeba95e9
2 files changed