Revert "Add invalid symbol page"

This reverts commit 96771266e3.

src/routes/uonetplus.js

@@ -2,12 +2,6 @@ const express = require('express');
 const router = express.Router();
 const protocol = require('../utils/connection');
 
-router.all("/:symbol", (req, res) => {
-    res.render('no-symbol', {
-        title: "Dziennik UONET+"
-    });
-});
-
 router.get("/powiatwulkanowy/Start.mvc/Endpoints", (req, res) => {
     const base = protocol(req) + "://" + req.get('host') + "/powiatwulkanowy/Start.mvc";
     res.json({

src/views/no-symbol.pug

@@ -1,13 +0,0 @@
-extends layout
-
-block extraHeader
-    meta(name="viewport" content="width=device-width, initial-scale=1")
-
-block content
-    #MainPage_ErrorDiv
-        div
-            h2 Informacja
-            | Podany identyfikator klienta jest niepoprawny.
-            br
-            br
-            p © 2020 Wulkanowy