Remove unused asset copy

rollup.config.js

@@ -242,7 +242,6 @@ export default {
                 {src: 'node_modules/source-sans-pro/WOFF2/OTF/*', dest: 'dist/local/' + pkg.name + '/fonts'},
                 {src: 'node_modules/vpu-common/src/spinner.js', dest: 'dist/local/' + pkg.name, rename: 'spinner.js'},
                 {src: 'node_modules/vpu-common/misc/browser-check.js', dest: 'dist/local/' + pkg.name, rename: 'browser-check.js'},
-                {src: 'assets/browser-check.js', dest: 'dist/local/' + pkg.name},
                 {src: 'assets/icon-*.png', dest: 'dist/local/' + pkg.name},
                 {src: 'assets/manifest.json', dest: 'dist', rename: pkg.name + '.manifest.json'},
                 {src: 'assets/*.metadata.json', dest: 'dist'},