Hi Katrina, is the garden area on your title or is it common property?
If its on common property and the other owners agreed to erect the bike rack ( I assume you didn’t attend the AGM) then your between a rock and a hard place.
You could ask the EC to screen it off with some planting such as a hedge so you don’t see it as much or some kind of privacy screen. That may be your best solution in this case.
On the other hand, if the garden area is on your title you will have no problems removing the bike rack.
Seems you’ve been outvoted since you don’t actually live there.