I believe there is an option now to change the report to matrix (within Edit > Grouping), and then with that page on the top right is 'matrix settings', where you can remove Count and Value columns. I am wondering if it will allow you to remove your Sum column that way?

Description -Why is this feature important to you - When the new 24.1 Release takes hold for the quarterly updates next week, there are some users that wouldn't normally need to view or edit projects or tasks within Workfront. Currently I am unable to remove Priorities from the menu, even if I chang...

Description - Background: There is a large project that personnel had added 10 custom forms to, on templates that were previously set-up (I'm sure personnel at the time didn't realize there was a limit to custom forms allowed per project). There is an 11th custom form I need to add, that is added to...