去掉物理碰撞组件，英雄的移动改由系统逻辑统一处理

assets/resources/game/skills/heath_small.prefab

@@ -35,16 +35,10 @@
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-      {
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-      },
-      {
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       }
     ],
     "_prefab": {
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+      "__id__": 14
     },
     "_lpos": {
       "__type__": "cc.Vec3",
@@ -191,74 +185,6 @@
     "__type__": "cc.CompPrefabInfo",
     "fileId": "63NP9yq3hEUKD/OZZZ5t7x"
   },
-  {
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-    "_name": "",
-    "_objFlags": 0,
-    "__editorExtras__": {},
-    "node": {
-      "__id__": 1
-    },
-    "_enabled": true,
-    "__prefab": {
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-    },
-    "enabledContactListener": true,
-    "bullet": true,
-    "awakeOnLoad": true,
-    "_group": 4,
-    "_type": 2,
-    "_allowSleep": false,
-    "_gravityScale": 0,
-    "_linearDamping": 0,
-    "_angularDamping": 0,
-    "_linearVelocity": {
-      "__type__": "cc.Vec2",
-      "x": 0,
-      "y": 0
-    },
-    "_angularVelocity": 0,
-    "_fixedRotation": false,
-    "_id": ""
-  },
-  {
-    "__type__": "cc.CompPrefabInfo",
-    "fileId": "f1VxV09PdOkofzgGv1tsZE"
-  },
-  {
-    "__type__": "cc.BoxCollider2D",
-    "_name": "",
-    "_objFlags": 0,
-    "__editorExtras__": {},
-    "node": {
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-    },
-    "_enabled": true,
-    "__prefab": {
-      "__id__": 11
-    },
-    "tag": 8,
-    "_group": 4,
-    "_density": 1,
-    "_sensor": true,
-    "_friction": 0.2,
-    "_restitution": 0,
-    "_offset": {
-      "__type__": "cc.Vec2",
-      "x": 0.4,
-      "y": -0.7
-    },
-    "_size": {
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-      "width": 11.6,
-      "height": 12.3
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-    "_id": ""
-  },
-  {
-    "__type__": "cc.CompPrefabInfo",
-    "fileId": "23eik112JPZYGiI8mJalTK"
-  },
   {
     "__type__": "45646oIyIdA24W+0c5rdELD",
     "_name": "",
@@ -269,7 +195,7 @@
     },
     "_enabled": true,
     "__prefab": {
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+      "__id__": 9
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     "_id": ""
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@@ -287,7 +213,7 @@
     },
     "_enabled": true,
     "__prefab": {
-      "__id__": 15
+      "__id__": 11
     },
     "playOnLoad": true,
     "_clips": [
@@ -316,7 +242,7 @@
     },
     "_enabled": true,
     "__prefab": {
-      "__id__": 17
+      "__id__": 13
     },
     "_id": ""
   },