suppress dead_code warning on Literal command node

pumpkin/src/commands/tree.rs

@@ -20,6 +20,7 @@ pub(crate) enum NodeType<'a> {
     ExecuteLeaf {
         run: &'a (dyn Fn(&mut CommandSender, &ConsumedArgs) -> Result<(), InvalidTreeError> + Sync),
     },
+    #[allow(dead_code)] // todo: remove (so far no commands requiring this are implemented)
     Literal {
         string: &'a str,
     },

pumpkin/src/commands/tree_builder.rs

@@ -115,6 +115,7 @@ impl <'a>NonLeafNodeBuilder<'a> {
 }
 
 /// Matches a sting literal.
+#[allow(dead_code)] // todo: remove (so far no commands requiring this are implemented)
 pub fn literal(string: &str) -> NonLeafNodeBuilder {
     NonLeafNodeBuilder {
         node_type: NodeType::Literal {