fix: update CDN for load.zhuzihan.com and remove codex.zhuzihan.com

Change CDN to "无加速" and delete non-existent site.

Co-authored-by: Simon <85533298+handsomezhuzhu@users.noreply.github.com>

components/site-navigation.tsx

@@ -69,7 +69,7 @@ const categories: Category[] = [
         domain: "load.zhuzihan.com",
         name: "GPT-Load",
         server: "狐蒂云-美国-2",
-        cdn: "EdgeOne加速",
+        cdn: "无加速",
         url: "https://load.zhuzihan.com",
       },
       {
@@ -100,13 +100,6 @@ const categories: Category[] = [
         cdn: "无加速",
         url: "https://git.zhuzihan.com",
       },
-      {
-        domain: "codex.zhuzihan.com",
-        name: "公益New-API",
-        server: "青瑞云",
-        cdn: "EdgeOne加速",
-        url: "https://codex.zhuzihan.com",
-      },
       {
         domain: "ai.zzhdsgsss.xyz",
         name: "LINUXDO公益New-API",