remove index.scss, sass dependencies, related webpack config

package.json

@@ -8,7 +8,7 @@
   ],
   "scripts": {
     "clean": "rm -rf ./dist",
-    "lint": "node_modules/.bin/eslint ./ && node_modules/.bin/sass-lint -v ./src/styles/**/* && npm run lint:translations",
+    "lint": "node_modules/.bin/eslint ./ && npm run lint:translations",
     "lint:translations": "node ./scripts/i18n-lint.js",
     "server": "node_modules/.bin/http-server",
     "test": "npm run build && npm run lint && npm run size && jest -c jest.json",
@@ -45,7 +45,6 @@
     "lodash": "^4.17.11",
     "manifesto.js": "^3.0.11",
     "node-fetch": "^2.6.0",
-    "node-sass": "^4.12.0",
     "normalize-url": "^4.2.0",
     "openseadragon": "^2.4.1",
     "prop-types": "^15.6.2",
@@ -66,7 +65,6 @@
     "redux-devtools-extension": "^2.13.2",
     "redux-thunk": "^2.3.0",
     "reselect": "^4.0.0",
-    "sass-loader": "^7.1.0",
     "uuid": "^3.3.2"
   },
   "devDependencies": {
@@ -108,7 +106,6 @@
     "react-dev-utils": "^9.0.1",
     "react-dom": "^16.8.6",
     "redux-mock-store": "^1.5.1",
-    "sass-lint": "^1.13.1",
     "style-loader": "^0.23.1",
     "supertest": "^4.0.2",
     "terser-webpack-plugin": "^1.3.0",

src/components/App.js

@@ -8,7 +8,6 @@ import createI18nInstance from '../i18n';
 import WorkspaceArea from '../containers/WorkspaceArea';
 import AuthenticationSender from '../containers/AuthenticationSender';
 import AccessTokenSender from '../containers/AccessTokenSender';
-import '../styles/index.scss';
 
 /**
  * This is the top level Mirador component.

webpack.config.js

@@ -36,12 +36,8 @@ const baseConfig = [
       rules: [
         babelLoaderConfig,
         {
-          test: /\.s?css$/,
-          use: [
-            'style-loader', // creates style nodes from JS strings
-            'css-loader', // translates CSS into CommonJS
-            'sass-loader', // compiles Sass to CSS, using Node Sass by default
-          ],
+          test: /\.css$/i,
+          use: ['style-loader', 'css-loader'],
         },
       ],
     },