Revert "adding stage handling to card"

This reverts commit 1060f7815f.

src/logic-scenes/board/card.gd

@@ -10,8 +10,6 @@ var noise: Noise = FastNoiseLite.new()
 var wiggle_tween
 var scale_tween
 
-var on_stage = false
-
 @export var text: String = "" :
     set(value):
         text = value
@@ -90,9 +88,8 @@ func _ready():
         _handle_wiggle(0)
 
 func _process(delta: float) -> void:
-    if self.on_stage:
-        if highlighted:
-            _handle_wiggle(delta)
+    if highlighted:
+        _handle_wiggle(delta)
     
     if get_overlapping_areas().size() > 0:
         if not is_printed:
@@ -123,25 +120,23 @@ func _on_focus_exited():
     print(self, "is not focused")
 
 func _on_mouse_entered():
-    if self.on_stage:
-        if not Input.is_action_pressed("mouse_left"):
-            highlighted = true
-            if "handle_hover" in owner:
-                owner.handle_hover(self)
+    if not Input.is_action_pressed("mouse_left"):
+        highlighted = true
+        if "handle_hover" in owner:
+            owner.handle_hover(self)
 
 func _on_mouse_exited():
-    if self.on_stage:
-        highlighted = false
+    highlighted = false
 
 func _on_input_event(viewport, event, shape_idx):
-    if self.on_stage:
-        if event is InputEventMouseMotion:
-            _move_card()
     
-        if event is InputEventMouseButton:
-            if event.button_index == MOUSE_BUTTON_LEFT:
-                if is_dragable and "handle_mouse_button" in owner:
-                    owner.handle_mouse_button(self, event)
+    if event is InputEventMouseMotion:
+        _move_card()
+        
+    if event is InputEventMouseButton:
+        if event.button_index == MOUSE_BUTTON_LEFT:
+            if is_dragable and "handle_mouse_button" in owner:
+                owner.handle_mouse_button(self, event)
 
 func _move_card():
     if is_dragged: