tests: unit-tests-{core,tools} no longer require a global io_service

BaseFixture is moved to tests/daemon and renamed to GlobalIoFixture

Refs: #4528
Change-Id: If9184e9f7f1d6072b0103d3ea3ca6c31a9e505c8
diff --git a/tests/daemon/table/cleanup.t.cpp b/tests/daemon/table/cleanup.t.cpp
index c6bd772..25405a6 100644
--- a/tests/daemon/table/cleanup.t.cpp
+++ b/tests/daemon/table/cleanup.t.cpp
@@ -27,15 +27,14 @@
 #include "fw/forwarder.hpp"
 
 #include "tests/test-common.hpp"
+#include "tests/daemon/global-io-fixture.hpp"
 #include "tests/daemon/face/dummy-face.hpp"
 
 namespace nfd {
 namespace tests {
 
-using namespace nfd::tests;
-
 BOOST_AUTO_TEST_SUITE(Table)
-BOOST_FIXTURE_TEST_SUITE(TestCleanup, BaseFixture)
+BOOST_FIXTURE_TEST_SUITE(TestCleanup, GlobalIoFixture)
 
 BOOST_AUTO_TEST_SUITE(FaceRemoval)