Remove an unhelpful comment
Remove an unhelpful comment

An unhelpful comment, and it's probably better to improve the DM docs
directly and then assume that knowledge for understanding Stratis's use
of DM.

Signed-off-by: Andy Grover <b7d524d2f5cc5aebadb6b92b08d3ab26911cde33@redhat.com>

mulkieran/stratisd,mulkieran/stratisd,trgill/stratisd,stratis-storage/stratisd,stratis-storage/stratisd,stratis-storage/stratisd,trgill/stratisd