I just rec'd a notice that my 5gb iCloud storage is nearly full. I only have 1 backup and a very few photos, totaling ~2.5gb. However, I now see that Messages are taking up ~2.5gb, filling up my 5gb. I presume this is a function of the upcoming "messages in the cloud" capability. I deleted all past Messages on my iPhone and Mac, clearing out every single past message/photo/video, but that space is still being consumed. Does anyone know how can I reclaim that space?