K 10 svn:author V 3 imp K 8 svn:date V 27 2019-02-27T22:16:59.243639Z K 7 svn:log V 279 Unconditionally support unmapped BIOs. This was another shim for supporting older kernels. However, all supported versions of FreeBSD have unmapped I/Os (as do several that have gone EOL), remove it. It's unlikely the driver would work on the older kernels anyway at this point. END