Remove Recommends for nvdimm libblockdev plugin.
Remove Recommends for nvdimm libblockdev plugin.

This was erroneously added when switching to weak dependencies for the
plugins.

rvykydal/blivet,vojtechtrefny/blivet,vojtechtrefny/blivet,jkonecny12/blivet,rvykydal/blivet,jkonecny12/blivet