build: require boost >= 1.71.0

Refs: #5276
Change-Id: Ie428541639dcf1113acfb9e9d0a80f9be87d6cd3
diff --git a/tests/daemon/global-io-fixture.cpp b/tests/daemon/global-io-fixture.cpp
index 05aa8a1..2fdb6ed 100644
--- a/tests/daemon/global-io-fixture.cpp
+++ b/tests/daemon/global-io-fixture.cpp
@@ -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,
@@ -42,11 +42,7 @@
 GlobalIoFixture::pollIo()
 {
   if (g_io.stopped()) {
-#if BOOST_VERSION >= 106600
     g_io.restart();
-#else
-    g_io.reset();
-#endif
   }
   return g_io.poll();
 }