Issue Roguelike-Celebration#843 - Disable Google SSO

Firebase changed how the API worked and I can't figure out how to get
Azure to properly reverse proxy the calls. It's like some sorta CORS but
for browser cookies and anywayways it's apparently remediable but I'll
be dammned if I have the time and energy to fix it, especially since
preview is this Friday.

Anyways we're disabling everything but email and I hope that works lmao

src/components/LoggedOutView.tsx

@@ -18,16 +18,15 @@ const uiConfig = {
     }
   },
   signInOptions: [
-    firebase.auth.EmailAuthProvider.PROVIDER_ID,
-    firebase.auth.GoogleAuthProvider.PROVIDER_ID
+    firebase.auth.EmailAuthProvider.PROVIDER_ID
   ]
 }
 
 export default function LoggedOutView () {
   return (
     <div>
       <header role="banner">
-        <h1>Welcome to Roguelike Celebration 2023!</h1>
+        <h1>Welcome to Roguelike Celebration 2024!</h1>
       </header>
       <main role="main">
         <p>
@@ -40,24 +39,13 @@ export default function LoggedOutView () {
         </p>
         <StyledFirebaseAuth uiConfig={uiConfig} firebaseAuth={firebase.auth()} />
         <p>
-          <strong>If you logged in with Twitter in previous years,</strong> we&apos;re sorry but
-          due to the recent unpleasantness, our Twitter integration has ceased
-          to function. You&apos;ll have to create a new account via email or Google.
-          Sorry for the trouble.
+          <strong>We no longer support signing in with any form other than email.</strong> We&apos;re sorry if you used
+          one of the third-party sign-ons in previous years. If you sign in using the same email you used for Twitter
+          or Google, you should be able to recover your account (it will ask you to reset your password) - otherwise,
+          please make a new account.
         </p>
         <p>
-          <strong>If you&apos;re having trouble signing in with Google Sign In,</strong> please try using Chrome. It
-          appears to sometimes fail with Firefox and Safari, but always works with Chrome. Go figure. Or, you can just
-          use the email login.
-        </p>
-        <p>
-          If you log in via email, we will require you to verify that email address.
-        </p>
-        <p>
-          No matter which service you log in with, we do not access any data
-          other than what is needed to authenticate you. If it would make you
-          more comfortable, feel free to sign up for and use a throwaway
-          account on one of these services.
+          If you sign up for a new account, we will require you to verify that email address.
         </p>
         <p>
           After logging in, you will have the opportunity to pick whatever chat handle you would