rm pure code embellishments from TODO

TODO

@@ -49,12 +49,8 @@ refactor func+op registration so that registered object can be const
 
 Terminology: "file" -> "workspace"
 
-boost::format -> cppformat
-
 lmfit call-back within class, thanks to std::functional
 
-read-plus Interface in EINEN namespace ask:: stecken ??
-
 Documentation:
 - Universal help/doc associated with
   - environment variables like psdir