BSC_Tests: remove obsolete VTY configuration

The settings concerning the IPA ping are a leftover from the
time where osmo-bsc used an IPA multiplex to support the the
SCCP lite A interface dialect. Since the related code is now
removed and osmo-bsc has been migrated to libosmo-sccp and
real AoIP interface, the configuration is no longer needed.

Change-Id: If67cdba2a043c5dbf23f998659c5000db924a7df
1 file changed