Fix stale LoopContinuation doc comment on FunctionInput in types.rs

Co-authored-by: pinodeca <32303022+pinodeca@users.noreply.github.com>

Author: Copilot

src/types.rs

@@ -850,8 +850,6 @@ pub struct FunctionGraph {
     pub nodes: std::collections::BTreeMap<String, FunctionNode>,
 }
 
-/// Loop continuation state preserved across `continue_as_new` generations.
-///
 /// Input structure passed to duroxide functions
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub struct FunctionInput {