Remove X<> link to CWD variable

This was being rendered as plain text before the dynamic variables table and
was confusing the meaning of what the text was trying to say.

Author: paultcochrane

lib/Language/variables.pod

@@ -726,9 +726,6 @@ Other compile-time variables:
 =comment There should be a better way get this table to be formatted
     properly, but if there is, Rakudo doesn't support it at the moment.
 
-X<current working directory>
-X<$*CWD|variable.$*CWD>
-
 =for table
     $*ARGFILES         Magic command-line input handle.
     ==