make access obsolete

Doc/ref/ref6.tex

@@ -506,10 +506,8 @@ program.)
 access_stmt:    "access" ...
 \end{verbatim}
 
-This statement will be used in the future to control access to
-instance and class variables.  Currently its syntax and effects are
-undefined; however the keyword \verb@access@ is a reserved word for
-the parser.
+This statement is obsolete.  It no longer generates any code; in the
+future, \verb@access@ will no longer be a reserved word.
 
 \section{The {\tt exec} statement} \label{exec}
 \stindex{exec}

Doc/ref6.tex

@@ -506,10 +506,8 @@ program.)
 access_stmt:    "access" ...
 \end{verbatim}
 
-This statement will be used in the future to control access to
-instance and class variables.  Currently its syntax and effects are
-undefined; however the keyword \verb@access@ is a reserved word for
-the parser.
+This statement is obsolete.  It no longer generates any code; in the
+future, \verb@access@ will no longer be a reserved word.
 
 \section{The {\tt exec} statement} \label{exec}
 \stindex{exec}