Most cars are made with 1 wiring loom regardless of the model/varient and even engine. If you looked close enough you would find these sort of things every where on many cars. Under the seats, behind trim, center console, near to fuse boxes, near to blanked off switches etc.
They will be for other accessories/features that are not fitted to your particular model due to varients in country or engine type etc.
Unless there is a corrosponding area where something has fallen off then I wouldnt worry about it!