remove react-highlight in package.json and demo

Author: ilyjs

demo/src/index.jsx

@@ -1,7 +1,6 @@
 const React = require('react');
 // Note that Highcharts has to be required separately
 const ReactHighcharts = require('react-highcharts');
-const Highlight = require('react-highlight');
 const ReactDOM = require('react-dom');
 require('prismjs');
 require('prismjs/themes/prism.css');

package.json

@@ -57,7 +57,6 @@
     "raw-loader": "^0.5.1",
     "react": "^16.2.0",
     "react-dom": "^16.2.0",
-    "react-highlight": "^0.10.0",
     "sinon": "^4.1.3",
     "style-loader": "^0.19.1",
     "uglifyjs-webpack-plugin": "^1.1.6",
@@ -67,8 +66,6 @@
   "dependencies": {
     "highcharts": "^6.0.4",
     "prismjs": "^1.9.0",
-    "react-highlight": "briancappello/react-highlight#react-v16-compiled",
-    "react-prism": "^4.3.2",
-    "refractor": "^2.2.0"
+    "react-prism": "^4.3.2"
   }
 }