fix: remove user agent (#695)

.js/plugins/english/Wuxiacity[readwn].js

@@ -49,7 +49,6 @@ var ReadwnPlugin = /** @class */ (function () {
         this.icon = "multisrc/readwn/icons/".concat(iconFileName, ".png");
         this.site = metadata.sourceSite;
         this.version = "1.0.0";
-        this.userAgent = "";
         this.filters = metadata.filters;
     }
     ReadwnPlugin.prototype.popularNovels = function (pageNo, _a) {
@@ -179,8 +178,7 @@ var ReadwnPlugin = /** @class */ (function () {
                                 "Content-Type": "application/x-www-form-urlencoded",
                                 Referer: this.site + "/search.html",
                                 Origin: this.site,
-                                "user-agent": this.userAgent ||
-                                    "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36",
+                                "user-agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.131 Safari/537.36",
                             },
                             method: "POST",
                             body: JSON.stringify({