Remove connection on Linkedin... Useful Link

The Link:
 http://help.linkedin.com/app/answers/detail/a_id/49

You can remove a connection from your Contacts page.

1. Move your cursor over Network at the top of your homepage and select Contacts.
2. Click the Remove Connections link in the top right of the Connections page.
3. Check the boxes next to the people you want to remove.
4. Click Remove Connections.

Connections will not be notified that they've been removed from your connections list. Only the member who breaks the connection can reinitiate that connection. They will be added to your list of contacts in case you want to reinvite them later.