bsock: removed an unneeded ASSERT macro

- tls_conn is set at the beginning of a tls session, in case of a failure
  the session is already aborted before, thus the tls_conn pointer is always
  set at this point wich makes the ASSERT redundant

core/src/lib/bsock.cc

@@ -393,8 +393,6 @@ bool BareosSocket::TwoWayAuthenticate(JobControlRecord *jcr,
 
 bool BareosSocket::DoTlsHandshakeAsAServer(ConfigurationParser *config, JobControlRecord *jcr)
 {
-  ASSERT(!tls_conn);
-
   TlsResource *tls_resource = reinterpret_cast<TlsResource *>(config->GetNextRes(config->r_own_, nullptr));
 
   if (!ParameterizeAndInitTlsConnectionAsAServer(config)) { return false; }