I added some custom properties like this:
bpy.types.Object.custom_float = bpy.props.FloatProperty(name=“Test Prob”)
How do I remove them now, so they won’t be shown under bpy.types.Object ?
It looks like they became permanently embedded in Blender because they are shown in new and all other projects as well !
EDIT: Already solved. I had to close blender apllication and run i t again (reloading wasn’t good enough)