rm unexported and unused Rcpp:::SHLIB

Author: romainfrancois

R/SHLIB.R

@@ -290,13 +290,6 @@ Dirk's older 'Intro to HPC with R' tutorial slides).  It is still not
 recommended as there are tools and automation mechanisms that can do the work
 for you.
 
-An alternative, which might work better on Windows is to use the
-unexported function \texttt{Rcpp:::SHLIB} :
-
-<<lang=bash>>=
-$ Rscript -e "Rcpp:::SHLIB('myfile.cpp')"
-@
-
 \subsection{But R CMD SHLIB still does not work !}
 
 We have had reports in the past where build failures occurred when users had