Remove unused constants and types from App.tsx

src/app/App.tsx

@@ -213,8 +213,6 @@ import {
   DEFAULT_INTERACTABLE_PROMPT,
   DEFAULT_INTERACTABLE_RADIUS,
   DEFAULT_NPC_MODEL_ASSET_ID,
-  DEFAULT_NPC_TIME_WINDOW_END_HOUR,
-  DEFAULT_NPC_TIME_WINDOW_START_HOUR,
   DEFAULT_NPC_YAW_DEGREES,
   DEFAULT_POINT_LIGHT_COLOR_HEX,
   DEFAULT_POINT_LIGHT_DISTANCE,
@@ -246,7 +244,6 @@ import {
   DEFAULT_SPOT_LIGHT_DIRECTION,
   DEFAULT_SPOT_LIGHT_INTENSITY,
   DEFAULT_TRIGGER_VOLUME_SIZE,
-  NPC_PRESENCE_MODES,
   areEntityInstancesEqual,
   clonePlayerStartInputBindings,
   clonePlayerStartMovementTemplate,
@@ -254,7 +251,6 @@ import {
   createNpcAlwaysPresence,
   createNpcColliderSettings,
   createNpcEntity,
-  createNpcTimeWindowPresence,
   createPointLightEntity,
   inferPlayerStartMovementTemplateKind,
   createPlayerStartInputBindings,
@@ -284,8 +280,7 @@ import {
   type PlayerStartMovementTemplate,
   type PlayerStartNavigationMode,
   type EntityInstance,
-  type EntityKind,
-  type NpcPresenceMode
+  type EntityKind
 } from "../entities/entity-instances";
 import {
   getEntityDisplayLabelById,