src: avoid calling Thread::stop() explicitly

src/core/filesystem/file_monitor_linux.cpp

@@ -118,8 +118,6 @@ struct FileMonitorImpl
 	void stop()
 	{
 		_exit = true;
-		_thread.stop();
-
 		close(_fd);
 	}
 

src/resource/resource_loader.cpp

@@ -36,7 +36,6 @@ ResourceLoader::~ResourceLoader()
 {
 	_exit = true;
 	_requests_condition.signal(); // Spurious wake to exit thread
-	_thread.stop();
 }
 
 void ResourceLoader::add_request(const ResourceRequest& rr)