cleanup WAL was removed

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59450 65644016-39b1-43b1-bf79-96bc8fe82c15
remove unused constants

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59451 65644016-39b1-43b1-bf79-96bc8fe82c15