Revert "[llvm-exegesis] Disable load store aliasing test"
This reverts commit 4efe170d858eb54432f520abb4e7f0086236748b.
Not because I know it's working on AArch64 SVE, but because I
cannot reproduce it even on the same machine.
So in the hopes that it was a disk issue, something temporary,
I'm going to enable it again. If it fails again maybe it'll
show some sort of pattern or what I've missed to reproduce it.
