chore(deps): remove unused auto-prefixer (#771)

Author: Anemy

package-lock.json

@@ -1140,7 +1140,6 @@
     "@vscode/test-electron": "^2.4.1",
     "@vscode/vsce": "^2.31.1",
     "@wojtekmaj/enzyme-adapter-react-17": "^0.8.0",
-    "autoprefixer": "^10.4.20",
     "buffer": "^6.0.3",
     "chai": "^4.5.0",
     "chai-as-promised": "^7.1.2",

package.json

@@ -2,7 +2,6 @@
 const path = require('path');
 const webpack = require('webpack');
 
-const autoprefixer = require('autoprefixer');
 const { BundleAnalyzerPlugin } = require('webpack-bundle-analyzer');
 const DuplicatePackageCheckerPlugin = require('duplicate-package-checker-webpack-plugin');
 const { merge } = require('webpack-merge');