refactor : simplify the scene

Assets/Level/Prefabs/Dev/TestBlock.prefab

@@ -13,7 +13,6 @@ GameObject:
   - component: {fileID: 489735366413190748}
   - component: {fileID: 6101101176935368636}
   - component: {fileID: 6700426716916120764}
-  - component: {fileID: 5678899781269647745}
   - component: {fileID: 7552511637356990312}
   m_Layer: 0
   m_Name: TestBlock
@@ -335,28 +334,6 @@ MeshFilter:
   m_PrefabAsset: {fileID: 0}
   m_GameObject: {fileID: 2408983304096713058}
   m_Mesh: {fileID: 0}
---- !u!64 &5678899781269647745
-MeshCollider:
-  m_ObjectHideFlags: 0
-  m_CorrespondingSourceObject: {fileID: 0}
-  m_PrefabInstance: {fileID: 0}
-  m_PrefabAsset: {fileID: 0}
-  m_GameObject: {fileID: 2408983304096713058}
-  m_Material: {fileID: 0}
-  m_IncludeLayers:
-    serializedVersion: 2
-    m_Bits: 0
-  m_ExcludeLayers:
-    serializedVersion: 2
-    m_Bits: 0
-  m_LayerOverridePriority: 0
-  m_IsTrigger: 0
-  m_ProvidesContacts: 0
-  m_Enabled: 1
-  serializedVersion: 5
-  m_Convex: 0
-  m_CookingOptions: 30
-  m_Mesh: {fileID: 0}
 --- !u!114 &7552511637356990312
 MonoBehaviour:
   m_ObjectHideFlags: 0