fixed gcc compile issues

app/widget/timelinewidget/tool/edit.cpp

@@ -7,15 +7,15 @@ TimelineWidget::EditTool::EditTool(TimelineWidget* parent) :
 
 void TimelineWidget::EditTool::MousePress(TimelineViewMouseEvent *event)
 {
-
+  Q_UNUSED(event)
 }
 
 void TimelineWidget::EditTool::MouseMove(TimelineViewMouseEvent *event)
 {
-
+  Q_UNUSED(event)
 }
 
 void TimelineWidget::EditTool::MouseRelease(TimelineViewMouseEvent *event)
 {
-
+  Q_UNUSED(event)
 }