Use the Google Search Console
Using a setting within the Google Search Console, you are able to easily have a URL removed from the Google index.
In case you are not yet using the Google Search Console, you can activate your website for the free (Google Search Console) in just a few minutes. This also lets you remove URLs from the Google Index afterwards.
Removing a URL from the index with the Google Search Console:
- Log into the Google Search Console and select the desired website
- Click on “Optimization” in the left-hand navigation
- Click on “Remove URL” in the sub-menu
- Click on the button “create a new request for removal” on this page
You will now be asked to type in the URL of the page that you want to be removed and confirm your choice by clicking on “continue” (in our example this is the page http://www.example.com/page4.html)
Done. Now you have to wait some time until the desired URL is removed from Google’s index.
For more information you can visit on How can I remove a URL on my website from the Google Index? – SISTRIX