lsdb: emit signals when modified

RoutingTable and NamePrefixTable consume the signal
and behave accordingly.

refs: #4127

Change-Id: I6540f30f0222f804b01dc7d9640831c84e5264cc
diff --git a/tests/update/test-prefix-update-processor.cpp b/tests/update/test-prefix-update-processor.cpp
index ca887d1..e5a5890 100644
--- a/tests/update/test-prefix-update-processor.cpp
+++ b/tests/update/test-prefix-update-processor.cpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
-/**
- * Copyright (c) 2014-2020,  The University of Memphis,
+/*
+ * Copyright (c) 2014-2021,  The University of Memphis,
  *                           Regents of the University of California,
  *                           Arizona Board of Regents.
  *
@@ -17,7 +17,7 @@
  *
  * You should have received a copy of the GNU General Public License along with
  * NLSR, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
- **/
+ */
 
 #include "update/prefix-update-processor.hpp"
 #include "nlsr.hpp"
@@ -86,9 +86,6 @@
 
     addIdentity(conf.getRouterPrefix());
 
-    // Initialize NLSR so a sync socket is created
-    nlsr.initialize();
-
     this->advanceClocks(ndn::time::milliseconds(10));
 
     face.sentInterests.clear();