Mark IP as whitelisted if brute force protection is disabled

Currently, when disabling the brute force protection no new brute force attempts are logged. However, the ones logged within the last 24 hours will still be used for throttling.

This is quite an unexpected behaviour and caused some support issues. With this change when the brute force protection is disabled also the existing attempts within the last 24 hours will be disregarded.

Signed-off-by: Lukas Reschke <lukas@statuscode.ch>