removed unused code

src/pages/Login.tsx

@@ -1,4 +1,4 @@
-import { createRef, useEffect, useMemo, useState } from "react"
+import { useMemo, useState } from "react"
 import { Navigate } from "react-router-dom"
 import { authorizeLogin, isLoggedIn, LoginState, useClearToken } from "../authorization"
 import { SVGRightArrow } from "../components/Icons"
@@ -9,9 +9,6 @@ export function Login() {
     var [password, setPassword] = useState("")
     var [loginState, setLoginState] = useState(isLoggedIn)
 
-    var usernameRef = createRef<HTMLInputElement>()
-    var passwordRef = createRef<HTMLInputElement>()
-
     var login = (e: React.ChangeEvent<HTMLFormElement>) => {
         e.preventDefault()
         if (username.length === 0 || password.length === 0) {