When the person to whom you have sent an invitation has not responded to the request then you can cancel your invitation. Read on to know how to cancel the LinkedIn invitation on a desktop:
Open LinkedIn in your web browser.
Find the My Network icon at the top of your homepage.
Find the View sent invitations on the top and then click on it.
Then sent invitations are selected by default. The sent invitations for which the person has not responded will be displayed.
Now, click Withdraw found to the right of the respective member's invitations(s).