Once you enable Google +1 feature, you can click +1 button next to links (or websites) of your liking on Google Search result pages. As more and more links are liked using +1 button, a list of such liked content is created on Google Profile page. You can view all the +1 button liked content at one place under +1’s tab on Google Profile page.
Manage all +1 content on Google Profile page
1. Open profiles.google.com webpage and login into your Google Profile.
2. Click the +1’s tab to view listing of links (websites) liked by you using +1 button.
3. Click X button next to link (or content) that you want to delete or remove from your list of liking. Confirm you want to delete this +1 for final change.