libsaria: Move library's LoadTask() to file.cpp

This is the only place it's used, so it makes sense to define it there.

libsaria/library/file.cpp

@@ -2,6 +2,7 @@
  * Manages the libsaria library save file
  */
 
+#include <libsaria/idle.h>
 #include <libsaria/library.h>
 #include "path/path.h"
 #include "library.h"
@@ -27,15 +28,18 @@ static void do_load()
 	libsaria::library::refresh();
 }
 
-LoadTask::LoadTask()  {}
-LoadTask::~LoadTask() {}
-void LoadTask::run_task()
+class LoadTask : public IdleTask
 {
-	do_load();
-}
+	public:
+		void run_task()
+		{
+			do_load();
+		}
+};
 
 namespace libsaria
 {
+
 	void library::load()
 	{
 		LoadTask *task = new LoadTask();

libsaria/library/library.h

@@ -13,14 +13,6 @@ using namespace std;
 #include "path/path.h"
 #include "list/list.h"
 
-class LoadTask : public IdleTask
-{
-	public:
-		LoadTask();
-		~LoadTask();
-		void run_task();
-};
-
 class ScanTask : public IdleTask
 {
 	private: