Prerequisites
A: User must be logged in.

1. Select a Package.

2. On package details page with "Dependencies" tab on, click on "Remove" action button with icon.

3. On the next page, select single package or multiple packages (by holding CTL or SHIFT key while selecting) from the list,
then click REMOVE.

Package(s) will be removed from a release.

See also
Add NEW package(s) to Release, Add OLD package(s) to Release