ConfigManager改全局单例

assets/Scenes/MainScene.scene

@@ -18,15 +18,12 @@
     "_children": [
       {
         "__id__": 2
-      },
-      {
-        "__id__": 32
       }
     ],
     "_active": true,
     "_components": [],
     "_prefab": {
-      "__id__": 34
+      "__id__": 32
     },
     "_lpos": {
       "__type__": "cc.Vec3",
@@ -57,7 +54,7 @@
     },
     "autoReleaseAssets": false,
     "_globals": {
-      "__id__": 35
+      "__id__": 33
     },
     "_id": "1a23cd3e-e487-4fd1-a415-346c2087464d"
   },
@@ -1018,63 +1015,6 @@
     },
     "_id": "98EWBIubZPlZT+LFQb4IYI"
   },
-  {
-    "__type__": "cc.Node",
-    "_name": "ConfigManager",
-    "_objFlags": 0,
-    "__editorExtras__": {},
-    "_parent": {
-      "__id__": 1
-    },
-    "_children": [],
-    "_active": true,
-    "_components": [
-      {
-        "__id__": 33
-      }
-    ],
-    "_prefab": null,
-    "_lpos": {
-      "__type__": "cc.Vec3",
-      "x": 0,
-      "y": 0,
-      "z": 0
-    },
-    "_lrot": {
-      "__type__": "cc.Quat",
-      "x": 0,
-      "y": 0,
-      "z": 0,
-      "w": 1
-    },
-    "_lscale": {
-      "__type__": "cc.Vec3",
-      "x": 1,
-      "y": 1,
-      "z": 1
-    },
-    "_mobility": 0,
-    "_layer": 1073741824,
-    "_euler": {
-      "__type__": "cc.Vec3",
-      "x": 0,
-      "y": 0,
-      "z": 0
-    },
-    "_id": "67ZXnZeExFXIu59phK6Xjz"
-  },
-  {
-    "__type__": "fbd43WrI4tK6KXuGCPuxhSR",
-    "_name": "",
-    "_objFlags": 0,
-    "__editorExtras__": {},
-    "node": {
-      "__id__": 32
-    },
-    "_enabled": true,
-    "__prefab": null,
-    "_id": "57vDjH7bVD4JDeqZChrdP3"
-  },
   {
     "__type__": "cc.PrefabInfo",
     "root": null,
@@ -1086,28 +1026,28 @@
   {
     "__type__": "cc.SceneGlobals",
     "ambient": {
-      "__id__": 36
+      "__id__": 34
     },
     "shadows": {
-      "__id__": 37
+      "__id__": 35
     },
     "_skybox": {
-      "__id__": 38
+      "__id__": 36
     },
     "fog": {
-      "__id__": 39
+      "__id__": 37
     },
     "octree": {
-      "__id__": 40
+      "__id__": 38
     },
     "skin": {
-      "__id__": 41
+      "__id__": 39
     },
     "lightProbeInfo": {
-      "__id__": 42
+      "__id__": 40
     },
     "postSettings": {
-      "__id__": 43
+      "__id__": 41
     },
     "bakedWithStationaryMainLight": false,
     "bakedWithHighpLightmap": false