doc: Remove example for scaling images since we now provide aspectRatio option

Author: Veselina Radeva

README.md

@@ -75,26 +75,6 @@ context
 
 > **NOTE**: To request permissions for Android 6+ (API 23+) we use [nativescript-permissions](https://www.npmjs.com/package/nativescript-permissions).
 
-### Process the selection with scaling images to specified dimensions and returning ImageSource object
-
-```
-context
-    .authorize()
-    .then(function() {
-        return context.present();
-    })
-    .then(function(selection) {
-        selection.forEach((selectedPhoto) => {
-            selectedPhoto.getImage({ maxWidth: 500, maxHeight: 500 }) // maintains aspect ratio
-            .then((imageSource) => {
-                // process the selected image
-            });
-        });
-    }).catch(function (e) {
-        // process error
-    });
-```
-
 ## API
 
 ### Methods