The comments to this recent question disagree on whether the U.S. briefly abandoned other launch systems in favor of the Space Shuttle.
The Shuttle was designed to be capable of bringing all U.S. crew and cargo into and out of Earth orbit. However, the actual frequency of launches was never high enough to meet this goal. While the Shuttle continued as the exclusive vehicle for crew transport and cargo return, other launchers were being used to send up cargo.
The question therefore is: Were there any families of launchers that were discontinued because of the Shuttle, only to later return to fill the launch capacity that the Shuttle couldn't fulfill?
(The question would be best answered by considering each of the launcher families in use at that time.)