Cleanup dead platforms

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59565 65644016-39b1-43b1-bf79-96bc8fe82c15
Misc cleanup

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59566 65644016-39b1-43b1-bf79-96bc8fe82c15
remove vms basic

git-svn-id: svn+ssh://svn.code.sf.net/p/firebird/code/firebird/trunk@59567 65644016-39b1-43b1-bf79-96bc8fe82c15