ci: don't create LICENSE.txt files anymore

... due to switch to SPDX headers

Signed-off-by: Andy Scherzinger <info@andy-scherzinger.de>

webpack.js

@@ -3,6 +3,8 @@
  * SPDX-License-Identifier: AGPL-3.0-or-later
  */
 const webpackConfig = require('@nextcloud/webpack-vue-config')
+// eslint-disable-next-line n/no-extraneous-require
+const TerserPlugin = require('terser-webpack-plugin')
 const WebpackSPDXPlugin = require('./build-js/WebpackSPDXPlugin.js')
 const webpackRules = require('@nextcloud/webpack-vue-config/rules')
 const path = require('path')
@@ -25,6 +27,14 @@ webpackConfig.entry = {
 	'admin-settings': path.resolve(path.join('src', 'adminSettings.js')),
 }
 
+webpackConfig.optimization.minimizer = [new TerserPlugin({
+	extractComments: false,
+	terserOptions: {
+		format: {
+			comments: false,
+		},
+	},
+})]
 
 webpackConfig.plugins = [
 	...webpackConfig.plugins,