Remove pointless columns check in PasswordPrompt
Remove pointless columns check in PasswordPrompt

The fast-path "avoid full refresh" was copied from the main loop. It is
not a fast path in reverseISearch because PasswordPrompt always has to
do a full refresh.

Simplify the code slightly by removing the unnecessary if{} block.

PLWagner/golang-liner,go-delve/liner,Cofyc/liner,glycerine/liner,platinasystems/liner,mvo5/liner,moander/liner