[cpp.module] Drop meaningless sentence about keywords as macros

Author: AlisdairM

source/preprocessor.tex

@@ -1219,12 +1219,6 @@
     \opt{\keyword{export}} \keyword{module} \opt{pp-tokens} \terminal{;} new-line
 \end{bnf}
 
-\pnum
-A \grammarterm{pp-module} shall not
-appear in a context where \tcode{module}
-or (if it is the first preprocessing token of the \grammarterm{pp-module}) \tcode{export}
-is an identifier defined as an object-like macro.
-
 \pnum
 The \grammarterm{pp-tokens}, if any, of a \grammarterm{pp-module}
 shall be of the form: