remove unused layout component

src/pages/Layouts/default.tsx

@@ -1,17 +0,0 @@
-import React from "react";
-import { Outlet } from "react-router-dom";
-import styled from "styled-components";
-
-const StyledLayout = styled.div`
-  background: ${({ theme }) => theme.BLACK_SECONDARY};
-`;
-
-const DefaultLayout: React.FC = () => {
-  return (
-    <StyledLayout>
-      <Outlet />
-    </StyledLayout>
-  );
-};
-
-export default DefaultLayout;