remove error print in area collision, should be a valid situation, closes #2463

scene/2d/area_2d.cpp

@@ -383,7 +383,11 @@ void Area2D::_clear_monitoring() {
 
 			Object *obj = ObjectDB::get_instance(E->key());
 			Node *node = obj ? obj->cast_to<Node>() : NULL;
-			ERR_CONTINUE(!node);
+
+			if (!node) //node may have been deleted in previous frame, this should not be an error
+				continue;
+			//ERR_CONTINUE(!node);
+
 			if (!E->get().in_tree)
 				continue;
 

servers/physics_2d/body_2d_sw.cpp

@@ -394,8 +394,7 @@ void Body2DSW::_compute_area_gravity_and_dampenings(const Area2DSW *p_area) {
 	}
 
 	area_linear_damp += p_area->get_linear_damp();
-	area_angular_damp += p_area->get_angular_damp();
-	printf("%f\n",gravity.y);
+	area_angular_damp += p_area->get_angular_damp();	
 }
 
 void Body2DSW::integrate_forces(real_t p_step) {