fix douban 404 (#1566)

close #1564

lib/routes/douban/explore_column.js

@@ -28,6 +28,12 @@ module.exports = async (ctx) => {
         })
         .get();
 
+    for (let i = list.length - 1; i >= 0; i--) {
+        if (list[i].author === '[已注销]') {
+            list.splice(i, 1);
+        }
+    }
+
     const out = await Promise.all(
         list.map(async (info) => {
             const title = info.title;