remove depreciated uglify code

Author: PeterStaev

README.md

@@ -237,31 +237,6 @@ If you want to use multiple item templates, you can do that very similarly to ho
 </GridView>
 ```
 
-## Working with Webpack+Uglify
-In case you are uing webpack and also are minifying/uglifying your code, there are some specific names that should be excluded from the uglification for the widget to work properly. The GridView widget exports those and you need to add them to the mangle exclude option of the uglifyjs plugin in the `webpack.common.js` file:
-```js
-var gridViewMangleExcludes = require("nativescript-grid-view/uglify-mangle-excludes").default;
-//......
-module.exports = function (platform, destinationApp) {
-    //......
-    if (process.env.npm_config_uglify) {
-        plugins.push(new webpack.LoaderOptionsPlugin({
-            minimize: true
-        }));
-
-        //Work around an Android issue by setting compress = false
-        var compress = platform !== "android";
-        plugins.push(new webpack.optimize.UglifyJsPlugin({
-            mangle: {
-                except: nsWebpack.uglifyMangleExcludes.concat(gridViewMangleExcludes),
-            },
-            compress: compress,
-        }));
-    }
-   //......
-}
-```
-
 ## Demos
 This repository includes both Angular and plain NativeScript demos. In order to run those execute the following in your shell:
 ```shell