Removed an erronous comment about alias files.

Doc/mac/libmacostools.tex

@@ -20,9 +20,6 @@ destination are created if necessary.  The method copies data and
 resource fork and some finder information (creator, type, flags) and
 optionally the creation, modification and backup times (default is to
 copy them). Custom icons, comments and icon position are not copied.
-
-If the source is an alias the original to which the alias points is
-copied, not the aliasfile.
 \end{funcdesc}
 
 \begin{funcdesc}{copytree}{src, dst}