refactor(hero): 移除无用的英雄操作按钮与相关样式

1. 从App.vue中删除英雄列表的修改和删除操作按钮
2. 移除全局和移动端适配下的.row-actions相关样式代码
3. 清理heroes.json中多余的技能配置字段

put/server/data/heroes.json

@@ -43,8 +43,7 @@
           "cd": 8,
           "cdExpr": null,
           "overrides": {
-            "ap": 30,
-            "summon_count": 1
+            "ap": 30
           },
           "desc": "{target}获得生命最大值{ap}%的护盾",
           "lv_entries": [
@@ -52,19 +51,17 @@
               "lv": 8,
               "s_lv": 2,
               "overrides": {
-                "ap": 60,
-                "summon_count": 1
+                "ap": 60
               },
-              "desc": ""
+              "desc": "{target}获得生命最大值{ap}%的护盾"
             },
             {
               "lv": 16,
               "s_lv": 3,
               "overrides": {
-                "ap": 120,
-                "summon_count": 2
+                "ap": 120
               },
-              "desc": ""
+              "desc": "{target}获得生命最大值{ap}%的护盾"
             }
           ]
         }