Revert "Fixed the "maxBackupIndex" support"

This reverts commit e65d06f7388185fe26647413bfac41757746a7a4.
Revert "Added the `maxBackupIndex` option to the default log appender"

This reverts commit 7661969159ffecfd4a904a943cf250bcc4e49d6e.
Release 0.3.8