Autotools: Do not register buildconfigurationfactory

Change-Id: I8df8ca7d4440436acb595d69d64f460125d4dbd0
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>

src/plugins/autotoolsprojectmanager/autotoolsprojectplugin.cpp

@@ -67,7 +67,6 @@ bool AutotoolsProjectPlugin::initialize(const QStringList &arguments,
         return false;
 
     addAutoReleasedObject(new AutotoolsTargetFactory);
-    addAutoReleasedObject(new AutotoolsBuildConfigurationFactory);
     addAutoReleasedObject(new MakeStepFactory);
     addAutoReleasedObject(new AutogenStepFactory);
     addAutoReleasedObject(new ConfigureStepFactory);

src/plugins/autotoolsprojectmanager/autotoolstarget.cpp

@@ -146,7 +146,7 @@ AutotoolsTarget *AutotoolsTargetFactory::create(Project *parent, const QString &
     AutotoolsTarget *t = new AutotoolsTarget(project);
 
     // Add default build configuration:
-    AutotoolsBuildConfigurationFactory *bcf = ExtensionSystem::PluginManager::instance()->getObject<AutotoolsBuildConfigurationFactory>();
+    AutotoolsBuildConfigurationFactory *bcf = t->buildConfigurationFactory();
     AutotoolsBuildConfiguration *bc = bcf->createDefaultConfiguration(t);
     bc->setDisplayName("Default Build");