Revert "Introduce reusable horizontal line"

This reverts commit 4d8c147fe0f1a14bd884f73cf345e7d3a28b954a.

Signed-off-by: Janne Savolainen <janne.savolainen@live.fi>

src/renderer/components/+preferences/horizontal-line/horizontal-line.module.scss

@@ -1,5 +0,0 @@
-.horizontalLine {
-  height: 1px;
-  border-top: thin solid var(--hrColor);
-  margin-top: 40px;
-}

src/renderer/components/+preferences/horizontal-line/horizontal-line.tsx

@@ -1,9 +0,0 @@
-/**
- * Copyright (c) OpenLens Authors. All rights reserved.
- * Licensed under MIT License. See LICENSE in root directory for more information.
- */
-import React from "react";
-
-import styles from "./horizontal-line.module.scss";
-
-export const HorizontalLine = () => <hr className={styles.horizontalLine} />;