Remove build-key-pass.bat during uninstall

Signed-off-by: Samuli Seppänen <samuli@openvpn.net>
Removed revoke-key.bat from the easy-rsa uninstall section

This script does not exist in the easy-rsa anymore, so there's no need to delete
it.

Signed-off-by: Samuli Seppänen <samuli@openvpn.net>
Updated build-complete.vars to match openvpn-install-2.3.3-I002

Signed-off-by: Samuli Seppänen <samuli@openvpn.net>