Merge pull request #91400 from Sauermann/fix-unused-variable

Remove unused variable `Viewport::gui.last_mouse_focus`

Author: akien-mga

scene/main/viewport.cpp

@@ -1734,7 +1734,6 @@ void Viewport::_gui_input_event(Ref<InputEvent> p_event) {
 				gui.mouse_focus_mask.set_flag(button_mask);
 			} else {
 				gui.mouse_focus = gui_find_control(mpos);
-				gui.last_mouse_focus = gui.mouse_focus;
 
 				if (!gui.mouse_focus) {
 					return;
@@ -2391,9 +2390,6 @@ void Viewport::_gui_remove_control(Control *p_control) {
 		gui.forced_mouse_focus = false;
 		gui.mouse_focus_mask.clear();
 	}
-	if (gui.last_mouse_focus == p_control) {
-		gui.last_mouse_focus = nullptr;
-	}
 	if (gui.key_focus == p_control) {
 		gui.key_focus = nullptr;
 	}

scene/main/viewport.h

@@ -345,7 +345,6 @@ class Viewport : public Node {
 		bool key_event_accepted = false;
 		HashMap<int, ObjectID> touch_focus;
 		Control *mouse_focus = nullptr;
-		Control *last_mouse_focus = nullptr;
 		Control *mouse_click_grabber = nullptr;
 		BitField<MouseButtonMask> mouse_focus_mask;
 		Control *key_focus = nullptr;