Remmove visit_lambda_var method from visitors

Author: egiurleo

lib/syntax_tree/visitor.rb

@@ -218,9 +218,6 @@ class Visitor < BasicVisitor
     # Visit a Lambda node.
     alias visit_lambda visit_child_nodes
 
-    # Visit a LambdaVar node.
-    alias visit_lambda_var visit_child_nodes
-
     # Visit a LBrace node.
     alias visit_lbrace visit_child_nodes
 

lib/syntax_tree/visitor/field_visitor.rb

@@ -525,14 +525,6 @@ def visit_lambda(node)
         end
       end
 
-      def visit_lambda_var(node)
-        node(node, "lambda_var") do
-          field("params", node.params)
-          list("locals", node.locals) if node.locals.any?
-          comments(node)
-        end
-      end
-
       def visit_lbrace(node)
         visit_token(node, "lbrace")
       end

lib/syntax_tree/visitor/mutation_visitor.rb

@@ -500,11 +500,6 @@ def visit_lambda(node)
         )
       end
 
-      # Visit a LambdaVar node.
-      def visit_lambda_var(node)
-        node.copy(params: visit(node.params), locals: visit_all(node.locals))
-      end
-
       # Visit a LBrace node.
       def visit_lbrace(node)
         node.copy