Landing 페이지를 삭제하고 side로 리다이렉트 되도록 처리한다

src/App.tsx

@@ -1,7 +1,6 @@
 import React, { useRef } from 'react';
-import { Route, Switch, useLocation } from 'react-router-dom';
+import { Route, Switch, useLocation, Redirect } from 'react-router-dom';
 import styles from '@src/App.module.scss';
-import LandingPage from '@src/pages/LandingPage';
 import LoginPage from '@src/pages/LoginPage';
 import JoinPage from '@src/pages/JoinPage';
 import IdeaPage from '@src/pages/IdeaPage';
@@ -16,6 +15,8 @@ import SideReadPage from '@src/pages/SideReadPage';
 import AlertModal from '@src/components/modals/AlertModal';
 import { useAppDispatch, useUiState, hideGlobalAlert } from '@src/store';
 
+const PATH_CHECK = ['login', 'join', 'idea', 'side', 'mypage'];
+
 const App = () => {
   const { isGlobalAlertVisible, globalAlertMessage } = useUiState();
   const dispatch = useAppDispatch();
@@ -38,7 +39,6 @@ const App = () => {
           <Sidebar pathname={pathname} />
         </div>
         <div className={styles.content} ref={pageRef}>
-          <Route exact path="/" component={LandingPage} />
           <AuthRoute
             path="/login"
             component={LoginPage}
@@ -72,6 +72,9 @@ const App = () => {
             redirectPath="/login"
             render={(props) => <MyPage {...props} handleToTop={handleToTop} />}
           />
+          {pathname && !PATH_CHECK.some((each) => pathname.includes(each)) && (
+            <Redirect to="/side" />
+          )}
         </div>
         {isGlobalAlertVisible && (
           <AlertModal