Hi AshleyRobertsPhoto,
Sorry that you're facing issues while deleting multiple presets in Lightroom CC. The new management tools allow for the hiding of groups of presets and profiles. Download Lightroom CC 1.4 and give the new management tools a try! At this time we are marking this implemented as you now have the ability to manage the presets which appear in your interface in groups. Please refer this linked article for detailed workflow: Use Edit controls in Lightroom CC
Let us know if that helps.
Thanks,
Akash