Always clear offline updates file after a repair operation
No matter what the results of the repair operation were, there's nothing of any value that anyone can do with the file anymore, and if it sticks around, it can annoy the user on every subsequent login for no good reason. So let's just remove it.
BUG: 451753 BUG: 450973 CCBUG: 467638 FIXED-IN: 5.27.5