Currently, SCORM uploads are added as one of two options: ungraded Assignment or graded assignment.
Please add another SCORM Category that is not an assignment, and does not add clutter columns to the gradebook.
Many courses choose not to embed quizzes or other reporting data inside interactive SCORM lessons or learning objects. These are delivered in Canvas more like content pages.
There is an elaborate and difficult workaround, though it would be much more user-friendly for Canvas programmers to add a third option that bypasses assignments altogether.