Revert "데모용 임시 회원가입 구현"

This reverts commit eb913366646f43fda669f0550788e0888c44b95a.

src/routes/(fullscreen)/auth/login/+page.svelte

@@ -3,21 +3,13 @@
   import { BottomDiv, Button, FullscreenDiv, TextButton, TextInput } from "$lib/components/atoms";
   import { TitledDiv } from "$lib/components/molecules";
   import { clientKeyStore, masterKeyStore } from "$lib/stores";
-  import NicknameModal from "./NicknameModal.svelte";
-  import {
-    requestLogin,
-    requestRegister,
-    requestSessionUpgrade,
-    requestMasterKeyDownload,
-  } from "./service";
+  import { requestLogin, requestSessionUpgrade, requestMasterKeyDownload } from "./service";
 
   let { data } = $props();
 
   let email = $state("");
   let password = $state("");
 
-  let isNicknameModalOpen = $state(false);
-
   const redirect = async (url: string) => {
     return await goto(`${url}?redirect=${encodeURIComponent(data.redirectPath)}`);
   };
@@ -48,34 +40,6 @@
       throw e;
     }
   };
-
-  const register = async (nickname: string) => {
-    // TODO: Validation
-
-    try {
-      if (!(await requestRegister(email, nickname, password)))
-        throw new Error("Failed to register");
-
-      if (!$clientKeyStore) return await redirect("/key/generate");
-
-      if (!(await requestSessionUpgrade($clientKeyStore)))
-        throw new Error("Failed to upgrade session");
-
-      // TODO: Multi-user support
-
-      if (
-        $masterKeyStore ||
-        (await requestMasterKeyDownload($clientKeyStore.decryptKey, $clientKeyStore.verifyKey))
-      ) {
-        await goto(data.redirectPath);
-      } else {
-        await redirect("/client/pending");
-      }
-    } catch (e) {
-      // TODO: Alert
-      throw e;
-    }
-  };
 </script>
 
 <svelte:head>
@@ -96,8 +60,6 @@
   </TitledDiv>
   <BottomDiv class="flex flex-col items-center gap-y-2">
     <Button onclick={login} class="w-full">로그인</Button>
-    <TextButton onclick={() => (isNicknameModalOpen = true)}>계정이 없어요</TextButton>
+    <TextButton>계정이 없어요</TextButton>
   </BottomDiv>
 </FullscreenDiv>
-
-<NicknameModal bind:isOpen={isNicknameModalOpen} onSubmitClick={register} />