In reply to EvelynDearlove:
If you were going to try that route placing any reliance on those bolts you may be the reason someone thought them better gone.
I climbed it about a decade ago and they were very poor. They looked like tiny diameter spits and I thought that were probably hand drilled and very shallow (<20mm). I assumed it was a don't fall off route.
I was back again last month and saw it in its bolt free state. A number of the bolts appeared to have been unscrewed from the sleeves but at least one was sheared off. I'm assuming that it snapped during an attempt at unbolting.
I'd personally have left them as I like bad gear and historical oddities but I can see that others might think that some people need protecting from themselves.