remove commented out nanoc rake tasks
remove commented out nanoc rake tasks

The nanoc cli command is the preferred interface for running external
tasks. All rake commands that use it will alert the operator to do so.

macobo/documentation,inokappa/documentation,inokappa/documentation,macobo/documentation,macobo/documentation,macobo/documentation,jhotta/documentation,jhotta/documentation,inokappa/documentation,jhotta/documentation,macobo/documentation,inokappa/documentation,jhotta/documentation,inokappa/documentation,jhotta/documentation,jhotta/documentation