Update contest data

contests_all.json

@@ -1,5 +1,5 @@
 {
-  "generated_at": 1789204344,
+  "generated_at": 1789217711,
   "contests": [
     {
       "platform": "UOJ",
@@ -17,30 +17,6 @@
       "status": "finished",
       "url": "https://uoj.ac/contest/113"
     },
-    {
-      "platform": "AtCoder",
-      "title": "AtCoder Daily Training ALL 2026/08/13 18:00start",
-      "start_time": 1786611600,
-      "end_time": 1786615200,
-      "status": "finished",
-      "url": "https://atcoder.jp/contests/adt_all_20260813_2"
-    },
-    {
-      "platform": "AtCoder",
-      "title": "AtCoder Daily Training EASY 2026/08/13 18:00start",
-      "start_time": 1786611600,
-      "end_time": 1786615200,
-      "status": "finished",
-      "url": "https://atcoder.jp/contests/adt_easy_20260813_2"
-    },
-    {
-      "platform": "AtCoder",
-      "title": "AtCoder Weekday Contest 0134 Beta",
-      "start_time": 1786618800,
-      "end_time": 1786622400,
-      "status": "finished",
-      "url": "https://atcoder.jp/contests/awc0134"
-    },
     {
       "platform": "AtCoder",
       "title": "AtCoder Daily Training ALL 2026/08/14 16:00start",
@@ -1081,14 +1057,6 @@
       "status": "finished",
       "url": "https://ac.nowcoder.com/acm/contest/139936"
     },
-    {
-      "platform": "AtCoder",
-      "title": "AtCoder Beginner Contest 475",
-      "start_time": 1789214400,
-      "end_time": 1789220400,
-      "status": "upcoming",
-      "url": "https://atcoder.jp/contests/abc475"
-    },
     {
       "platform": "Codeforces",
       "title": "Codeforces Round 1120 (Div. 1)",