HA: [lld] r251692 - Comments about how values were calculated for functions below were added.

[George Rimar via llvm-commits]

>I don't think this comments add much value to the code because it's already commented well. We have comments just above these new comments to show the final results of the calculations, so it is very easy to understand the intention of the code. If you get what we want to get here, it's in my opinion very easy to >understand the code as well.

Reverted in 251782.