Hello @Hejms,
The Wall Posts
is considered as default album to upload photos. If a user wants to upload photos in any other album ( personal album ) then he can select one while uploading media from media gallery.
Is there any way to either remove or hide the "Wall Posts"-album?
There is not any option to remove this album because it is the default parent album where all media will be uploaded if the user is not having any personal album.
How are you planning to manage media uploaded through BuddyPress activity posts, once you hide the Wall Posts
album?
We look forward to your reply.
Thanks.