Remove unused parameter from MapConstructor in Parser.jj
diff --git a/core/src/main/codegen/templates/Parser.jj b/core/src/main/codegen/templates/Parser.jj
index fa7c018..78f9f59 100644
--- a/core/src/main/codegen/templates/Parser.jj
+++ b/core/src/main/codegen/templates/Parser.jj
@@ -4966,7 +4966,6 @@
 SqlNode MapConstructor() :
 {
     SqlNodeList args;
-    SqlNode e;
     final Span s;
 }
 {