build: disable `-Wnon-virtual-dtor` compiler warning

It's overkill and suffers from annoying false positives that
prevent us from applying the "protected non-virtual destructor"
idiom in several perfectly valid cases. See for instance the
GCC bug https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102168

The -Wdelete-non-virtual-dtor warning (included in -Wall) is
the preferred alternative and is enough to catch the unsafe
cases without false positives.

Partially reverts 847de408cbb2358bbb664d971cc33e73b0b2ef7f

Change-Id: I46ee1f01e7d4e2b125c2c534c6550824ba1de4c0
diff --git a/tests/daemon/fw/topology-tester.hpp b/tests/daemon/fw/topology-tester.hpp
index 35c1fd5..e82705c 100644
--- a/tests/daemon/fw/topology-tester.hpp
+++ b/tests/daemon/fw/topology-tester.hpp
@@ -1,6 +1,6 @@
 /* -*- Mode:C++; c-file-style:"gnu"; indent-tabs-mode:nil; -*- */
 /*
- * Copyright (c) 2014-2022,  Regents of the University of California,
+ * Copyright (c) 2014-2023,  Regents of the University of California,
  *                           Arizona Board of Regents,
  *                           Colorado State University,
  *                           University Pierre & Marie Curie, Sorbonne University,
@@ -110,7 +110,7 @@
   bool m_isUp = true;
   time::nanoseconds m_delay;
 
-  class ReceiveProxy : public face::InternalTransportBase
+  class ReceiveProxy final : public face::InternalTransportBase
   {
   public:
     using Callback = std::function<void(const Block&)>;