Remove method duplicated in parent class

lib/mutant/mutator/node/literal.rb

@@ -6,23 +6,6 @@ module Mutant
       # Abstract mutator for literal AST nodes
       class Literal < self
         include AbstractType
-
-      private
-
-        # Emit a new node with wrapping class for each entry in values
-        #
-        # @param [Array] values
-        #
-        # @return [undefined]
-        #
-        # @api private
-        #
-        def emit_values(values)
-          values.each do |value|
-            emit_self(value)
-          end
-        end
-
       end # Literal
     end # Node
   end # Mutator