At this time it seems as those no ability to delete photos uploaded to the Photos tab in bulk, only individually. I'm working on a long horizontal roadway project and uploaded about 1200 photos to the project. The only problem was that I meant to only upload 600 and I mistakenly added them all twice. There isn't a way to get rid of the ones I want (or get rid of them all and start again) unless I delete them one by one.
Possibly linking the Photos with Files, so that I could select folders full of photos that I'd like to view in the Gallery and Map? That would definitely help me organize and keep large projects like the one I'm working on manageable
Thanks!