The fact that someone took them down is a pretty good clue that it's not worth your time to put them up.
But....I would have stopped and had a second look as well.
Many times lighting is removed not because it is obsolete but rather due to remodeling of a business or building, or for slight gains in energy efficiency. Remember, improvements that result in energy efficiency is very likely a special tax write or incentive and may also be a capital project that can be totally written off in one year, when a company needs a tax deduction. Its not always about age or efficiency.
Also, because lighting is "old style" or not as energy efficient as the new stuff you can buy (if you have enough money) does not mean the lights won't preform quite well, and for the little use they may see, they will be a good bargain or compromise. I have Metal Halide 400w fixtures with translucent acrylic reflectors. They are very attractive, and provide lots of light, but are the older probe start type, and certainly not as energy efficient as later T8 and T5 fixtures.
They were removed from Wal-Mart and Sams Club stores in the Atlanta area. The main reason they were removed was liability. They are old enough that they do not have a bottom lens on them, and a shattered bulb will rain hot glass down on customers and if the outer glass breaks on the bulb, they will continue to work, but customers will be exposed to lots of UV that can cause major burns in short order. The secondary reason they were removed was efficiency. When you have as much lighting as Wal-Mart has, even a slight improvement in efficiency makes a huge difference in the power bill. I bought the 13 fixtures (#13 is a spare) for $500 several years ago, and have made very good use of them. They were all on last night for the first time in a very long time, and it was nice to have them, but I really would feel bad if I had paid several thousand to install all new, up to date, efficient fixtures that would only have saved me a few dollars at the most on power bills over these several years.
Charles