BuildManager: apply 'static' pattern

Change-Id: I00bb591c027a22088d5f1feedc84aa28523dcca2
Reviewed-by: David Schulz <david.schulz@digia.com>

src/plugins/debugger/debuggerplugin.cpp

@@ -3490,8 +3490,7 @@ void DebuggerPluginPrivate::testProjectEvaluated()
     QString fileName = m_testProject->projectFilePath();
     QVERIFY(!fileName.isEmpty());
     qWarning("Project %s loaded", qPrintable(fileName));
-    connect(ProjectExplorerPlugin::instance()->buildManager(),
-            SIGNAL(buildQueueFinished(bool)),
+    connect(BuildManager::instance(), SIGNAL(buildQueueFinished(bool)),
             SLOT(testProjectBuilt(bool)));
     ProjectExplorerPlugin::instance()->buildProject(m_testProject);
 }