test: Simplify tests with parent-child relationships

Create object instances with a parent to avoid the need for reparenting
objects manually.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Jacopo Mondi <jacopo@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund@ragnatech.se>

test/event-thread.cpp

@@ -27,7 +27,7 @@ public:
 	{
 		pipe(pipefd_);
 
-		notifier_ = new EventNotifier(pipefd_[0], EventNotifier::Read);
+		notifier_ = new EventNotifier(pipefd_[0], EventNotifier::Read, this);
 		notifier_->activated.connect(this, &EventHandler::readReady);
 	}
 
@@ -61,12 +61,6 @@ public:
 		return notified_;
 	}
 
-	void moveToThread(Thread *thread)
-	{
-		Object::moveToThread(thread);
-		notifier_->moveToThread(thread);
-	}
-
 private:
 	void readReady(EventNotifier *notifier)
 	{