Yes Les. It's simply that they standardised the chassis wiring loom to include that option. You can see the unused aircon connectors cable tied back under the n/s wheel arch. It's also the same loom for left or right hand drive cars with redundant wiring for screenwash and brake fluid indication. Redundancy can be found elsewhere behind the dash with loom accomodating switch connectors for all the unused positions for options not taken. Similarly at rear of car for reversing and rear fog connections, which I used to advantage to allow twins of both using a pair of red/white LED's.
The relay base was for six identical relays so they filled it whether aircon was chosen or not. Not so different from including spare fuses, you can use the redundant air-con one if needed elsewhere.
Strongly suggest you leave wiring alone. Removal will serve no purpose and does leave the option of retro-fitting aircon.
