Can't find a string

[Jack via KMyMoney-devel]

The handbook currently includes mention of "Always show a No. field" in  
the Data Entry tab of the ledger configuration dialog.  Searching, I  
find that string in several po files, but I don't see it anywhere in  
the source code.  Has it actually been removed, and if so, why is it  
sill in between 20 and 30 po files?

Thanks for any clue.
Jack