cleanup

Author: pavel-kirienko

README.md

@@ -53,12 +53,6 @@ Avoid introduction of new acronyms unless you really must.
 It is better to say "transfer-ID" or "data type hash" rather than TID or DTH.
 Excessive reliance on acronyms may impede comprehension.
 
-### Rigging
-
-In order to refer to a DSDL definition, use macro `\DSDLReference{}`.
-To include a DSDL definition or a namespace index, use macro `\DSDL{}`.
-Refer to the existing usages for an example.
-
 ### Structure and cross-referencing
 
 Each chapter is located in a dedicated directory, whose name is a single lowercase word.